13442237 has 2 divisors, whose sum is σ = 13442238. Its totient is φ = 13442236.

The previous prime is 13442201. The next prime is 13442239. The reversal of 13442237 is 73224431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8375236 + 5067001 = 2894^2 + 2251^2 .

It is a cyclic number.

It is not a de Polignac number, because 13442237 - 2⁶ = 13442173 is a prime.

Together with 13442239, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13442239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6721118 + 6721119.

It is an arithmetic number, because the mean of its divisors is an integer number (6721119).

Almost surely, 2^13442237 is an apocalyptic number.

It is an amenable number.

13442237 is a deficient number, since it is larger than the sum of its proper divisors (1).

13442237 is an equidigital number, since it uses as much as digits as its factorization.

13442237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 26.

The square root of 13442237 is about 3666.3656391582. The cubic root of 13442237 is about 237.7700684039.

Adding to 13442237 its reverse (73224431), we get a palindrome (86666668).

The spelling of 13442237 in words is "thirteen million, four hundred forty-two thousand, two hundred thirty-seven".