126321105504 has 96 divisors (see below), whose sum is σ = 370150349184. Its totient is φ = 37388897280.

The previous prime is 126321105499. The next prime is 126321105523. The reversal of 126321105504 is 405501123621.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1345549 + ... + 1436364.

It is an arithmetic number, because the mean of its divisors is an integer number (3855732804).

Almost surely, 2^126321105504 is an apocalyptic number.

It is an amenable number.

126321105504 is an abundant number, since it is smaller than the sum of its proper divisors (243829243680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126321105504 is a wasteful number, since it uses less digits than its factorization.

126321105504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781980 (or 2781972 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 126321105504 in words is "one hundred twenty-six billion, three hundred twenty-one million, one hundred five thousand, five hundred four".