43242157 has 12 divisors (see below), whose sum is σ = 52950720. Its totient is φ = 35113176.

The previous prime is 43242149. The next prime is 43242187. The reversal of 43242157 is 75124234.

It is not a de Polignac number, because 43242157 - 2³ = 43242149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43242187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22293 + ... + 24154.

It is an arithmetic number, because the mean of its divisors is an integer number (4412560).

Almost surely, 2^43242157 is an apocalyptic number.

It is an amenable number.

43242157 is a deficient number, since it is larger than the sum of its proper divisors (9708563).

43242157 is a wasteful number, since it uses less digits than its factorization.

43242157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46480 (or 46473 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 43242157 is about 6575.8768996994. The cubic root of 43242157 is about 350.9962283451.

The spelling of 43242157 in words is "forty-three million, two hundred forty-two thousand, one hundred fifty-seven".