124021431025021 has 8 divisors (see below), whose sum is σ = 130874433062400. Its totient is φ = 117200984817600.

The previous prime is 124021431024977. The next prime is 124021431025027. The reversal of 124021431025021 is 120520134120421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 124021431025021 - 2⁷ = 124021431024893 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 (124021431025027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8138949661 + ... + 8138964898.

It is an arithmetic number, because the mean of its divisors is an integer number (16359304132800).

Almost surely, 2^{124021431025021} is an apocalyptic number.

It is an amenable number.

124021431025021 is a deficient number, since it is larger than the sum of its proper divisors (6853002037379).

124021431025021 is a wasteful number, since it uses less digits than its factorization.

124021431025021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16277914979.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 124021431025021 its reverse (120520134120421), we get a palindrome (244541565145442).

The spelling of 124021431025021 in words is "one hundred twenty-four trillion, twenty-one billion, four hundred thirty-one million, twenty-five thousand, twenty-one".