124020051 has 4 divisors (see below), whose sum is σ = 165360072. Its totient is φ = 82680032.

The previous prime is 124020047. The next prime is 124020059. The reversal of 124020051 is 150020421.

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

It is a cyclic number.

It is not a de Polignac number, because 124020051 - 2² = 124020047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124020051.

It is not an unprimeable number, because it can be changed into a prime (124020059) 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, 20670006 + ... + 20670011.

It is an arithmetic number, because the mean of its divisors is an integer number (41340018).

Almost surely, 2^124020051 is an apocalyptic number.

124020051 is a deficient number, since it is larger than the sum of its proper divisors (41340021).

124020051 is an equidigital number, since it uses as much as digits as its factorization.

124020051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41340020.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 124020051 is about 11136.4290057451. The cubic root of 124020051 is about 498.6899719842.

Adding to 124020051 its reverse (150020421), we get a palindrome (274040472).

The spelling of 124020051 in words is "one hundred twenty-four million, twenty thousand, fifty-one".