124754721055 has 4 divisors (see below), whose sum is σ = 149705665272. Its totient is φ = 99803776840.

The previous prime is 124754721019. The next prime is 124754721101. The reversal of 124754721055 is 550127457421.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 124754721055 - 2¹¹ = 124754719007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12475472101 + ... + 12475472110.

It is an arithmetic number, because the mean of its divisors is an integer number (37426416318).

Almost surely, 2^124754721055 is an apocalyptic number.

124754721055 is a deficient number, since it is larger than the sum of its proper divisors (24950944217).

124754721055 is an equidigital number, since it uses as much as digits as its factorization.

124754721055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24950944216.

The product of its (nonzero) digits is 392000, while the sum is 43.

The spelling of 124754721055 in words is "one hundred twenty-four billion, seven hundred fifty-four million, seven hundred twenty-one thousand, fifty-five".