42693517 has 2 divisors, whose sum is σ = 42693518. Its totient is φ = 42693516.

The previous prime is 42693509. The next prime is 42693527. The reversal of 42693517 is 71539624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42693156 + 361 = 6534^2 + 19^2 .

It is a cyclic number.

It is not a de Polignac number, because 42693517 - 2³ = 42693509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42693527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21346758 + 21346759.

It is an arithmetic number, because the mean of its divisors is an integer number (21346759).

Almost surely, 2^42693517 is an apocalyptic number.

It is an amenable number.

42693517 is a deficient number, since it is larger than the sum of its proper divisors (1).

42693517 is an equidigital number, since it uses as much as digits as its factorization.

42693517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 37.

The square root of 42693517 is about 6534.0276246738. The cubic root of 42693517 is about 349.5054702948.

The spelling of 42693517 in words is "forty-two million, six hundred ninety-three thousand, five hundred seventeen".