126324904021 has 4 divisors (see below), whose sum is σ = 132973583200. Its totient is φ = 119676224844.

The previous prime is 126324904003. The next prime is 126324904039. The reversal of 126324904021 is 120409423621.

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 an interprime number because it is at equal distance from previous prime (126324904003) and next prime (126324904039).

It is not a de Polignac number, because 126324904021 - 2⁷ = 126324903893 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 (126324902021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3324339561 + ... + 3324339598.

It is an arithmetic number, because the mean of its divisors is an integer number (33243395800).

Almost surely, 2^126324904021 is an apocalyptic number.

It is an amenable number.

126324904021 is a deficient number, since it is larger than the sum of its proper divisors (6648679179).

126324904021 is an equidigital number, since it uses as much as digits as its factorization.

126324904021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6648679178.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 126324904021 in words is "one hundred twenty-six billion, three hundred twenty-four million, nine hundred four thousand, twenty-one".