42338657 has 4 divisors (see below), whose sum is σ = 42775236. Its totient is φ = 41902080.

The previous prime is 42338641. The next prime is 42338683. The reversal of 42338657 is 75683324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26306641 + 16032016 = 5129^2 + 4004^2 .

It is a cyclic number.

It is not a de Polignac number, because 42338657 - 2⁴ = 42338641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42338657.

It is not an unprimeable number, because it can be changed into a prime (42338357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218144 + ... + 218337.

It is an arithmetic number, because the mean of its divisors is an integer number (10693809).

Almost surely, 2^42338657 is an apocalyptic number.

It is an amenable number.

42338657 is a deficient number, since it is larger than the sum of its proper divisors (436579).

42338657 is an equidigital number, since it uses as much as digits as its factorization.

42338657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436578.

The product of its digits is 120960, while the sum is 38.

The square root of 42338657 is about 6506.8161953447. The cubic root of 42338657 is about 348.5344350290.

The spelling of 42338657 in words is "forty-two million, three hundred thirty-eight thousand, six hundred fifty-seven".