125021120 has 56 divisors (see below), whose sum is σ = 340242144. Its totient is φ = 42863616.

The previous prime is 125021063. The next prime is 125021137. The reversal of 125021120 is 21120521.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 125021095 and 125021104.

It is a congruent 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, 25667 + ... + 30146.

Almost surely, 2^125021120 is an apocalyptic number.

125021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125021120 is an abundant number, since it is smaller than the sum of its proper divisors (215221024).

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

125021120 is an equidigital number, since it uses as much as digits as its factorization.

125021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55837 (or 55827 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 125021120 is about 11181.2843627197. The cubic root of 125021120 is about 500.0281584142.

Adding to 125021120 its reverse (21120521), we get a palindrome (146141641).

The spelling of 125021120 in words is "one hundred twenty-five million, twenty-one thousand, one hundred twenty".