124979557 has 4 divisors (see below), whose sum is σ = 125963776. Its totient is φ = 123995340.

The previous prime is 124979551. The next prime is 124979567. The reversal of 124979557 is 755979421.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 755979421 = 1871 ⋅404051.

It is a cyclic number.

It is not a de Polignac number, because 124979557 - 2¹¹ = 124977509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 124979557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124979551) 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, 491919 + ... + 492172.

It is an arithmetic number, because the mean of its divisors is an integer number (31490944).

Almost surely, 2^124979557 is an apocalyptic number.

It is an amenable number.

124979557 is a deficient number, since it is larger than the sum of its proper divisors (984219).

124979557 is an equidigital number, since it uses as much as digits as its factorization.

124979557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984218.

The product of its digits is 793800, while the sum is 49.

The square root of 124979557 is about 11179.4256113630. The cubic root of 124979557 is about 499.9727411806.

The spelling of 124979557 in words is "one hundred twenty-four million, nine hundred seventy-nine thousand, five hundred fifty-seven".