13121902 has 8 divisors (see below), whose sum is σ = 20214936. Its totient is φ = 6383592.

The previous prime is 13121887. The next prime is 13121921. The reversal of 13121902 is 20912131.

13121902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13121902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88588 + ... + 88735.

It is an arithmetic number, because the mean of its divisors is an integer number (2526867).

Almost surely, 2^13121902 is an apocalyptic number.

13121902 is a deficient number, since it is larger than the sum of its proper divisors (7093034).

13121902 is a wasteful number, since it uses less digits than its factorization.

13121902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177362.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 13121902 is about 3622.4165966934. The cubic root of 13121902 is about 235.8661382971.

The spelling of 13121902 in words is "thirteen million, one hundred twenty-one thousand, nine hundred two".