124990128 has 50 divisors (see below), whose sum is σ = 361761444. Its totient is φ = 41662944.

The previous prime is 124990123. The next prime is 124990133. The reversal of 124990128 is 821099421.

It is an interprime number because it is at equal distance from previous prime (124990123) and next prime (124990133).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 124990092 and 124990101.

It is not an unprimeable number, because it can be changed into a prime (124990123) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 46926 + ... + 49517.

Almost surely, 2^124990128 is an apocalyptic number.

124990128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

124990128 is an abundant number, since it is smaller than the sum of its proper divisors (236771316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

124990128 is an equidigital number, since it uses as much as digits as its factorization.

124990128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96463 (or 96448 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 124990128 is about 11179.8983895204. The cubic root of 124990128 is about 499.9868369868.

The spelling of 124990128 in words is "one hundred twenty-four million, nine hundred ninety thousand, one hundred twenty-eight".