121251404 has 6 divisors (see below), whose sum is σ = 212189964. Its totient is φ = 60625700.

The previous prime is 121251359. The next prime is 121251419. The reversal of 121251404 is 404152121.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15156422 + ... + 15156429.

It is an arithmetic number, because the mean of its divisors is an integer number (35364994).

Almost surely, 2^121251404 is an apocalyptic number.

It is an amenable number.

121251404 is a deficient number, since it is larger than the sum of its proper divisors (90938560).

121251404 is a wasteful number, since it uses less digits than its factorization.

121251404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30312855 (or 30312853 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 121251404 is about 11011.4215249440. The cubic root of 121251404 is about 494.9510600189.

The spelling of 121251404 in words is "one hundred twenty-one million, two hundred fifty-one thousand, four hundred four".