121351142 has 12 divisors (see below), whose sum is σ = 200079348. Its totient is φ = 55159500.

The previous prime is 121351129. The next prime is 121351159. The reversal of 121351142 is 241153121.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 250484 + ... + 250967.

It is an arithmetic number, because the mean of its divisors is an integer number (16673279).

Almost surely, 2^121351142 is an apocalyptic number.

121351142 is a deficient number, since it is larger than the sum of its proper divisors (78728206).

121351142 is a wasteful number, since it uses less digits than its factorization.

121351142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501475 (or 501464 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 121351142 is about 11015.9494370662. The cubic root of 121351142 is about 495.0867337728.

The spelling of 121351142 in words is "one hundred twenty-one million, three hundred fifty-one thousand, one hundred forty-two".