13942557 has 8 divisors (see below), whose sum is σ = 20655680. Its totient is φ = 9295020.

The previous prime is 13942553. The next prime is 13942571. The reversal of 13942557 is 75524931.

13942557 is a `hidden beast` number, since 13 + 94 + 2 + 557 = 666.

It is not a de Polignac number, because 13942557 - 2² = 13942553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13942553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258169 + ... + 258222.

It is an arithmetic number, because the mean of its divisors is an integer number (2581960).

Almost surely, 2^13942557 is an apocalyptic number.

It is an amenable number.

13942557 is a deficient number, since it is larger than the sum of its proper divisors (6713123).

13942557 is an equidigital number, since it uses as much as digits as its factorization.

13942557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516400 (or 516394 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 13942557 is about 3733.9733528776. The cubic root of 13942557 is about 240.6841416892.

The spelling of 13942557 in words is "thirteen million, nine hundred forty-two thousand, five hundred fifty-seven".