121456402 has 8 divisors (see below), whose sum is σ = 182342412. Its totient is φ = 60675600.

The previous prime is 121456369. The next prime is 121456403. The reversal of 121456402 is 204654121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 110691441 + 10764961 = 10521^2 + 3281^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (121456403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23349 + ... + 28072.

Almost surely, 2^121456402 is an apocalyptic number.

121456402 is a deficient number, since it is larger than the sum of its proper divisors (60886010).

121456402 is a wasteful number, since it uses less digits than its factorization.

121456402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52604.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 121456402 is about 11020.7260196414. The cubic root of 121456402 is about 495.2298385085.

The spelling of 121456402 in words is "one hundred twenty-one million, four hundred fifty-six thousand, four hundred two".