124685990 has 128 divisors (see below), whose sum is σ = 292626432. Its totient is φ = 37509120.

The previous prime is 124685987. The next prime is 124686053. The reversal of 124685990 is 99586421.

It is a super-2 number, since 2×124685990² = 31093192204560200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 559019 + ... + 559241.

It is an arithmetic number, because the mean of its divisors is an integer number (2286144).

Almost surely, 2^124685990 is an apocalyptic number.

124685990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

124685990 is an abundant number, since it is smaller than the sum of its proper divisors (167940442).

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

124685990 is a wasteful number, since it uses less digits than its factorization.

124685990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 124685990 is about 11166.2881030359. The cubic root of 124685990 is about 499.5809689240.

The spelling of 124685990 in words is "one hundred twenty-four million, six hundred eighty-five thousand, nine hundred ninety".