13942237 has 2 divisors, whose sum is σ = 13942238. Its totient is φ = 13942236.

The previous prime is 13942223. The next prime is 13942289. The reversal of 13942237 is 73224931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13439556 + 502681 = 3666^2 + 709^2 .

It is a cyclic number.

It is not a de Polignac number, because 13942237 - 2⁷ = 13942109 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13942199 and 13942208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13942217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6971118 + 6971119.

It is an arithmetic number, because the mean of its divisors is an integer number (6971119).

Almost surely, 2^13942237 is an apocalyptic number.

It is an amenable number.

13942237 is a deficient number, since it is larger than the sum of its proper divisors (1).

13942237 is an equidigital number, since it uses as much as digits as its factorization.

13942237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 13942237 is about 3733.9305028348. The cubic root of 13942237 is about 240.6823003360.

The spelling of 13942237 in words is "thirteen million, nine hundred forty-two thousand, two hundred thirty-seven".