124990020 has 48 divisors (see below), whose sum is σ = 388859520. Its totient is φ = 33330528.

The previous prime is 124990013. The next prime is 124990039. The reversal of 124990020 is 20099421.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115192 + ... + 116271.

It is an arithmetic number, because the mean of its divisors is an integer number (8101240).

Almost surely, 2^124990020 is an apocalyptic number.

124990020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124990020 is an abundant number, since it is smaller than the sum of its proper divisors (263869500).

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

124990020 is a wasteful number, since it uses less digits than its factorization.

124990020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231481 (or 231473 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 124990020 is about 11179.8935594218. The cubic root of 124990020 is about 499.9866929792.

The spelling of 124990020 in words is "one hundred twenty-four million, nine hundred ninety thousand, twenty".