42560647 has 2 divisors, whose sum is σ = 42560648. Its totient is φ = 42560646.

The previous prime is 42560519. The next prime is 42560663. The reversal of 42560647 is 74606524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42560647 - 2⁷ = 42560519 is a prime.

It is a super-2 number, since 2×42560647² = 3622817346117218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42560677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21280323 + 21280324.

It is an arithmetic number, because the mean of its divisors is an integer number (21280324).

Almost surely, 2^42560647 is an apocalyptic number.

42560647 is a deficient number, since it is larger than the sum of its proper divisors (1).

42560647 is an equidigital number, since it uses as much as digits as its factorization.

42560647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 42560647 is about 6523.8521595757. The cubic root of 42560647 is about 349.1425186189.

The spelling of 42560647 in words is "forty-two million, five hundred sixty thousand, six hundred forty-seven".