13942757 has 2 divisors, whose sum is σ = 13942758. Its totient is φ = 13942756.

The previous prime is 13942741. The next prime is 13942759. The reversal of 13942757 is 75724931.

It is a Cunningham number, because it is equal to 3734²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13942756 + 1 = 3734^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 13942757 - 2⁴ = 13942741 is a prime.

It is a super-2 number, since 2×13942757² = 388800945522098, which contains 22 as substring.

Together with 13942759, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13942757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13942759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6971378 + 6971379.

It is an arithmetic number, because the mean of its divisors is an integer number (6971379).

Almost surely, 2^13942757 is an apocalyptic number.

It is an amenable number.

13942757 is a deficient number, since it is larger than the sum of its proper divisors (1).

13942757 is an equidigital number, since it uses as much as digits as its factorization.

13942757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 13942757 is about 3734.0001339047. Note that the first 3 decimals coincide. The cubic root of 13942757 is about 240.6852925206.

The spelling of 13942757 in words is "thirteen million, nine hundred forty-two thousand, seven hundred fifty-seven".