13642994 has 4 divisors (see below), whose sum is σ = 20464494. Its totient is φ = 6821496.

The previous prime is 13642987. The next prime is 13643011. The reversal of 13642994 is 49924631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9891025 + 3751969 = 3145^2 + 1937^2 .

It is a super-2 number, since 2×13642994² = 372262570568072, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3410747 + ... + 3410750.

Almost surely, 2^13642994 is an apocalyptic number.

13642994 is a deficient number, since it is larger than the sum of its proper divisors (6821500).

13642994 is an equidigital number, since it uses as much as digits as its factorization.

13642994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6821499.

The product of its digits is 46656, while the sum is 38.

The square root of 13642994 is about 3693.6423757586. The cubic root of 13642994 is about 238.9479062246.

The spelling of 13642994 in words is "thirteen million, six hundred forty-two thousand, nine hundred ninety-four".