124991772 has 48 divisors (see below), whose sum is σ = 301260960. Its totient is φ = 40303872.

The previous prime is 124991771. The next prime is 124991777. The reversal of 124991772 is 277199421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124991771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86754 + ... + 88182.

It is an arithmetic number, because the mean of its divisors is an integer number (6276270).

Almost surely, 2^124991772 is an apocalyptic number.

124991772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

124991772 is an abundant number, since it is smaller than the sum of its proper divisors (176269188).

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

124991772 is a wasteful number, since it uses less digits than its factorization.

124991772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670 (or 1668 counting only the distinct ones).

The product of its digits is 63504, while the sum is 42.

The square root of 124991772 is about 11179.9719140971. The cubic root of 124991772 is about 499.9890290926.

The spelling of 124991772 in words is "one hundred twenty-four million, nine hundred ninety-one thousand, seven hundred seventy-two".