13642922 has 4 divisors (see below), whose sum is σ = 20464386. Its totient is φ = 6821460.

The previous prime is 13642921. The next prime is 13642943. The reversal of 13642922 is 22924631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22924631 = 2539 ⋅9029.

It can be written as a sum of positive squares in only one way, i.e., 10297681 + 3345241 = 3209^2 + 1829^2 .

It is a super-2 number, since 2×13642922² = 372258641396168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13642921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3410729 + ... + 3410732.

Almost surely, 2^13642922 is an apocalyptic number.

13642922 is a deficient number, since it is larger than the sum of its proper divisors (6821464).

13642922 is an equidigital number, since it uses as much as digits as its factorization.

13642922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6821463.

The product of its digits is 5184, while the sum is 29.

The square root of 13642922 is about 3693.6326292689. The cubic root of 13642922 is about 238.9474858800.

The spelling of 13642922 in words is "thirteen million, six hundred forty-two thousand, nine hundred twenty-two".