124130431021 has 4 divisors (see below), whose sum is σ = 124133040000. Its totient is φ = 124127822044.

The previous prime is 124130431013. The next prime is 124130431093. The reversal of 124130431021 is 120134031421.

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.

It is a cyclic number.

It is not a de Polignac number, because 124130431021 - 2³ = 124130431013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124130430983 and 124130431001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124130411021) 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, 1231771 + ... + 1328728.

It is an arithmetic number, because the mean of its divisors is an integer number (31033260000).

Almost surely, 2^124130431021 is an apocalyptic number.

It is an amenable number.

124130431021 is a deficient number, since it is larger than the sum of its proper divisors (2608979).

124130431021 is an equidigital number, since it uses as much as digits as its factorization.

124130431021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2608978.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 124130431021 its reverse (120134031421), we get a palindrome (244264462442).

The spelling of 124130431021 in words is "one hundred twenty-four billion, one hundred thirty million, four hundred thirty-one thousand, twenty-one".