124997513 has 4 divisors (see below), whose sum is σ = 126579840. Its totient is φ = 123415188.

The previous prime is 124997503. The next prime is 124997519. The reversal of 124997513 is 315799421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 124997513 - 2⁴ = 124997497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124997519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 791045 + ... + 791202.

It is an arithmetic number, because the mean of its divisors is an integer number (31644960).

Almost surely, 2^124997513 is an apocalyptic number.

It is an amenable number.

124997513 is a deficient number, since it is larger than the sum of its proper divisors (1582327).

124997513 is an equidigital number, since it uses as much as digits as its factorization.

124997513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582326.

The product of its digits is 68040, while the sum is 41.

The square root of 124997513 is about 11180.2286649245. The cubic root of 124997513 is about 499.9966839780.

The spelling of 124997513 in words is "one hundred twenty-four million, nine hundred ninety-seven thousand, five hundred thirteen".