125124940 has 24 divisors (see below), whose sum is σ = 266091840. Its totient is φ = 49415808.

The previous prime is 125124931. The next prime is 125124949. The reversal of 125124940 is 49421521.

It is an interprime number because it is at equal distance from previous prime (125124931) and next prime (125124949).

It is a super-2 number, since 2×125124940² = 31312501220007200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125124899 and 125124908.

It is not an unprimeable number, because it can be changed into a prime (125124949) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 38017 + ... + 41176.

It is an arithmetic number, because the mean of its divisors is an integer number (11087160).

Almost surely, 2^125124940 is an apocalyptic number.

125124940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125124940 is an abundant number, since it is smaller than the sum of its proper divisors (140966900).

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

125124940 is a wasteful number, since it uses less digits than its factorization.

125124940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79281 (or 79279 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 125124940 is about 11185.9259786573. The cubic root of 125124940 is about 500.1665311952.

The spelling of 125124940 in words is "one hundred twenty-five million, one hundred twenty-four thousand, nine hundred forty".