121428942 has 16 divisors (see below), whose sum is σ = 242998272. Its totient is φ = 40452920.

The previous prime is 121428919. The next prime is 121428959. The reversal of 121428942 is 249824121.

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, 7873 + ... + 17459.

It is an arithmetic number, because the mean of its divisors is an integer number (15187392).

Almost surely, 2^121428942 is an apocalyptic number.

121428942 is an abundant number, since it is smaller than the sum of its proper divisors (121569330).

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

121428942 is a wasteful number, since it uses less digits than its factorization.

121428942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11703.

The product of its digits is 9216, while the sum is 33.

The square root of 121428942 is about 11019.4801147786. The cubic root of 121428942 is about 495.1925136300.

The spelling of 121428942 in words is "one hundred twenty-one million, four hundred twenty-eight thousand, nine hundred forty-two".