13442623 has 4 divisors (see below), whose sum is σ = 13876288. Its totient is φ = 13008960.

The previous prime is 13442621. The next prime is 13442641. The reversal of 13442623 is 32624431.

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

It is a cyclic number.

It is not a de Polignac number, because 13442623 - 2¹ = 13442621 is a prime.

It is a super-2 number, since 2×13442623² = 361408226240258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13442621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216786 + ... + 216847.

It is an arithmetic number, because the mean of its divisors is an integer number (3469072).

Almost surely, 2^13442623 is an apocalyptic number.

13442623 is a deficient number, since it is larger than the sum of its proper divisors (433665).

13442623 is an equidigital number, since it uses as much as digits as its factorization.

13442623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433664.

The product of its digits is 3456, while the sum is 25.

The square root of 13442623 is about 3666.4182794657. The cubic root of 13442623 is about 237.7723442743.

The spelling of 13442623 in words is "thirteen million, four hundred forty-two thousand, six hundred twenty-three".