121407402 has 16 divisors (see below), whose sum is σ = 243200160. Its totient is φ = 40404912.

The previous prime is 121407401. The next prime is 121407463. The reversal of 121407402 is 204704121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121407401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11877 + ... + 19592.

It is an arithmetic number, because the mean of its divisors is an integer number (15200010).

Almost surely, 2^121407402 is an apocalyptic number.

121407402 is an abundant number, since it is smaller than the sum of its proper divisors (121792758).

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

121407402 is a wasteful number, since it uses less digits than its factorization.

121407402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32117.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 121407402 is about 11018.5027113488. The cubic root of 121407402 is about 495.1632315458.

The spelling of 121407402 in words is "one hundred twenty-one million, four hundred seven thousand, four hundred two".