124940720 has 20 divisors (see below), whose sum is σ = 290487360. Its totient is φ = 49976256.

The previous prime is 124940707. The next prime is 124940731. The reversal of 124940720 is 27049421.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×124940720² = 31220367028236800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 780800 + ... + 780959.

It is an arithmetic number, because the mean of its divisors is an integer number (14524368).

Almost surely, 2^124940720 is an apocalyptic number.

124940720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124940720 is an abundant number, since it is smaller than the sum of its proper divisors (165546640).

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

124940720 is a wasteful number, since it uses less digits than its factorization.

124940720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561772 (or 1561766 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 124940720 is about 11177.6884909180. The cubic root of 124940720 is about 499.9209475021.

The spelling of 124940720 in words is "one hundred twenty-four million, nine hundred forty thousand, seven hundred twenty".