125123720 has 32 divisors (see below), whose sum is σ = 281862720. Its totient is φ = 49990080.

The previous prime is 125123707. The next prime is 125123731. The reversal of 125123720 is 27321521.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50429 + ... + 52851.

It is an arithmetic number, because the mean of its divisors is an integer number (8808210).

Almost surely, 2^125123720 is an apocalyptic number.

125123720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125123720 is an abundant number, since it is smaller than the sum of its proper divisors (156739000).

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

125123720 is a wasteful number, since it uses less digits than its factorization.

125123720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3725 (or 3721 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 125123720 is about 11185.8714457122. The cubic root of 125123720 is about 500.1649056063.

The spelling of 125123720 in words is "one hundred twenty-five million, one hundred twenty-three thousand, seven hundred twenty".