12642990 has 16 divisors (see below), whose sum is σ = 30343248. Its totient is φ = 3371456.

The previous prime is 12642983. The next prime is 12642997. The reversal of 12642990 is 9924621.

12642990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12642983) and next prime (12642997).

It is a super-2 number, since 2×12642990² = 319690392280200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12642997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210687 + ... + 210746.

It is an arithmetic number, because the mean of its divisors is an integer number (1896453).

Almost surely, 2^12642990 is an apocalyptic number.

12642990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12642990 is an abundant number, since it is smaller than the sum of its proper divisors (17700258).

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

12642990 is a wasteful number, since it uses less digits than its factorization.

12642990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421443.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 12642990 is about 3555.6982436647. The cubic root of 12642990 is about 232.9610230319.

The spelling of 12642990 in words is "twelve million, six hundred forty-two thousand, nine hundred ninety".