124042550551 has 4 divisors (see below), whose sum is σ = 124058707504. Its totient is φ = 124026393600.

The previous prime is 124042550543. The next prime is 124042550573. The reversal of 124042550551 is 155055240421.

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 124042550551 - 2³ = 124042550543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124042550531) 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, 8066955 + ... + 8082316.

It is an arithmetic number, because the mean of its divisors is an integer number (31014676876).

Almost surely, 2^124042550551 is an apocalyptic number.

124042550551 is a deficient number, since it is larger than the sum of its proper divisors (16156953).

124042550551 is an equidigital number, since it uses as much as digits as its factorization.

124042550551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16156952.

The product of its (nonzero) digits is 40000, while the sum is 34.

Adding to 124042550551 its reverse (155055240421), we get a palindrome (279097790972).

The spelling of 124042550551 in words is "one hundred twenty-four billion, forty-two million, five hundred fifty thousand, five hundred fifty-one".