121402656004 has 48 divisors (see below), whose sum is σ = 254879428608. Its totient is φ = 49469495328.

The previous prime is 121402655953. The next prime is 121402656013. The reversal of 121402656004 is 400656204121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456864 + ... + 671959.

It is an arithmetic number, because the mean of its divisors is an integer number (5309988096).

Almost surely, 2^121402656004 is an apocalyptic number.

121402656004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121402656004 is an abundant number, since it is smaller than the sum of its proper divisors (133476772604).

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

121402656004 is a wasteful number, since it uses less digits than its factorization.

121402656004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129024 (or 1129022 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 121402656004 in words is "one hundred twenty-one billion, four hundred two million, six hundred fifty-six thousand, four".