121405469942 has 16 divisors (see below), whose sum is σ = 189135946752. Its totient is φ = 58384181160.

The previous prime is 121405469921. The next prime is 121405470023. The reversal of 121405469942 is 249964504121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5996498 + ... + 6016709.

It is an arithmetic number, because the mean of its divisors is an integer number (11820996672).

Almost surely, 2^121405469942 is an apocalyptic number.

121405469942 is a deficient number, since it is larger than the sum of its proper divisors (67730476810).

121405469942 is a wasteful number, since it uses less digits than its factorization.

121405469942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12013403.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 121405469942 in words is "one hundred twenty-one billion, four hundred five million, four hundred sixty-nine thousand, nine hundred forty-two".