42367257 has 24 divisors (see below), whose sum is σ = 64212096. Its totient is φ = 26886816.

The previous prime is 42367243. The next prime is 42367261. The reversal of 42367257 is 75276324.

It is a happy number.

42367257 is a `hidden beast` number, since 42 + 367 + 257 = 666.

It is not a de Polignac number, because 42367257 - 2¹¹ = 42365209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42367277) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14298 + ... + 17004.

It is an arithmetic number, because the mean of its divisors is an integer number (2675504).

Almost surely, 2^42367257 is an apocalyptic number.

42367257 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

42367257 is a deficient number, since it is larger than the sum of its proper divisors (21844839).

42367257 is a wasteful number, since it uses less digits than its factorization.

42367257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2797 (or 2794 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The square root of 42367257 is about 6509.0135197279. The cubic root of 42367257 is about 348.6128963524.

It can be divided in two parts, 42367 and 257, that added together give a palindrome (42624).

The spelling of 42367257 in words is "forty-two million, three hundred sixty-seven thousand, two hundred fifty-seven".