121602402 has 24 divisors (see below), whose sum is σ = 267793500. Its totient is φ = 39869280.

The previous prime is 121602379. The next prime is 121602427. The reversal of 121602402 is 204206121.

121602402 is a `hidden beast` number, since 1 + 21 + 602 + 40 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 121418361 + 184041 = 11019^2 + 429^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54277 + ... + 56472.

Almost surely, 2^121602402 is an apocalyptic number.

121602402 is an abundant number, since it is smaller than the sum of its proper divisors (146191098).

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

121602402 is a wasteful number, since it uses less digits than its factorization.

121602402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110818 (or 110815 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 121602402 is about 11027.3479132564. The cubic root of 121602402 is about 495.4281939213.

Adding to 121602402 its reverse (204206121), we get a palindrome (325808523).

The spelling of 121602402 in words is "one hundred twenty-one million, six hundred two thousand, four hundred two".