121901402 has 16 divisors (see below), whose sum is σ = 209172480. Its totient is φ = 52193808.

The previous prime is 121901371. The next prime is 121901419. The reversal of 121901402 is 204109121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13799 + ... + 20837.

It is an arithmetic number, because the mean of its divisors is an integer number (13073280).

Almost surely, 2^121901402 is an apocalyptic number.

121901402 is a deficient number, since it is larger than the sum of its proper divisors (87271078).

121901402 is a wasteful number, since it uses less digits than its factorization.

121901402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8285.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 121901402 is about 11040.8967932863. The cubic root of 121901402 is about 495.8339199642.

The spelling of 121901402 in words is "one hundred twenty-one million, nine hundred one thousand, four hundred two".