42192637 has 2 divisors, whose sum is σ = 42192638. Its totient is φ = 42192636.

The previous prime is 42192607. The next prime is 42192653. The reversal of 42192637 is 73629124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40525956 + 1666681 = 6366^2 + 1291^2 .

It is a cyclic number.

It is not a de Polignac number, because 42192637 - 2⁷ = 42192509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42192607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21096318 + 21096319.

It is an arithmetic number, because the mean of its divisors is an integer number (21096319).

Almost surely, 2^42192637 is an apocalyptic number.

It is an amenable number.

42192637 is a deficient number, since it is larger than the sum of its proper divisors (1).

42192637 is an equidigital number, since it uses as much as digits as its factorization.

42192637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 42192637 is about 6495.5859627904. The cubic root of 42192637 is about 348.1332916315.

The spelling of 42192637 in words is "forty-two million, one hundred ninety-two thousand, six hundred thirty-seven".