numpy break number in equal parts

package main

import (
    "fmt"
    "math"
)

func main() {
    num := 123456789
    parts := 5

    result := breakNumber(num, parts)
    fmt.Println(result)
}

func breakNumber(num, parts int) []int {
    numDigits := int(math.Floor(math.Log10(float64(num)))) + 1
    partSize := numDigits / parts
    remainder := numDigits % parts

    result := make([]int, parts)
    current := num

    for i := parts - 1; i >= 0; i-- {
        digits := partSize
        if remainder > 0 {
            digits++
            remainder--
        }

        power := int(math.Pow10(digits - 1))
        result[i] = current / power
        current %= power
    }

    return result
}