42308137 has 2 divisors, whose sum is σ = 42308138. Its totient is φ = 42308136.

The previous prime is 42308113. The next prime is 42308141. The reversal of 42308137 is 73180324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25160256 + 17147881 = 5016^2 + 4141^2 .

It is a cyclic number.

It is not a de Polignac number, because 42308137 - 2¹⁵ = 42275369 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42308107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21154068 + 21154069.

It is an arithmetic number, because the mean of its divisors is an integer number (21154069).

Almost surely, 2^42308137 is an apocalyptic number.

It is an amenable number.

42308137 is a deficient number, since it is larger than the sum of its proper divisors (1).

42308137 is an equidigital number, since it uses as much as digits as its factorization.

42308137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 42308137 is about 6504.4705395597. The cubic root of 42308137 is about 348.4506673904.

The spelling of 42308137 in words is "forty-two million, three hundred eight thousand, one hundred thirty-seven".