13121290 has 32 divisors (see below), whose sum is σ = 29070720. Its totient is φ = 4152384.

The previous prime is 13121279. The next prime is 13121291. The reversal of 13121290 is 9212131.

It is not an unprimeable number, because it can be changed into a prime (13121291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6300 + ... + 8119.

It is an arithmetic number, because the mean of its divisors is an integer number (908460).

Almost surely, 2^13121290 is an apocalyptic number.

13121290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13121290 is an abundant number, since it is smaller than the sum of its proper divisors (15949430).

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

13121290 is a wasteful number, since it uses less digits than its factorization.

13121290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14446.

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

The square root of 13121290 is about 3622.3321217139. The cubic root of 13121290 is about 235.8624713408.

The spelling of 13121290 in words is "thirteen million, one hundred twenty-one thousand, two hundred ninety".