42615497 has 2 divisors, whose sum is σ = 42615498. Its totient is φ = 42615496.

The previous prime is 42615493. The next prime is 42615509. The reversal of 42615497 is 79451624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37503376 + 5112121 = 6124^2 + 2261^2 .

It is a cyclic number.

It is not a de Polignac number, because 42615497 - 2² = 42615493 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42615497.

It is not a weakly prime, because it can be changed into another prime (42615491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21307748 + 21307749.

It is an arithmetic number, because the mean of its divisors is an integer number (21307749).

Almost surely, 2^42615497 is an apocalyptic number.

It is an amenable number.

42615497 is a deficient number, since it is larger than the sum of its proper divisors (1).

42615497 is an equidigital number, since it uses as much as digits as its factorization.

42615497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 42615497 is about 6528.0546106784. The cubic root of 42615497 is about 349.2924399482.

The spelling of 42615497 in words is "forty-two million, six hundred fifteen thousand, four hundred ninety-seven".