42560657 has 4 divisors (see below), whose sum is σ = 43073520. Its totient is φ = 42047796.

The previous prime is 42560647. The next prime is 42560663. The reversal of 42560657 is 75606524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42560657 - 2¹⁸ = 42298513 is a prime.

It is a super-2 number, since 2×42560657² = 3622819048543298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42560647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256307 + ... + 256472.

It is an arithmetic number, because the mean of its divisors is an integer number (10768380).

Almost surely, 2^42560657 is an apocalyptic number.

It is an amenable number.

42560657 is a deficient number, since it is larger than the sum of its proper divisors (512863).

42560657 is an equidigital number, since it uses as much as digits as its factorization.

42560657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512862.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 42560657 is about 6523.8529259940. The cubic root of 42560657 is about 349.1425459636.

The spelling of 42560657 in words is "forty-two million, five hundred sixty thousand, six hundred fifty-seven".