42339937 has 2 divisors, whose sum is σ = 42339938. Its totient is φ = 42339936.

The previous prime is 42339931. The next prime is 42339943. The reversal of 42339937 is 73993324.

It is a balanced prime because it is at equal distance from previous prime (42339931) and next prime (42339943).

It can be written as a sum of positive squares in only one way, i.e., 33074001 + 9265936 = 5751^2 + 3044^2 .

It is a cyclic number.

It is not a de Polignac number, because 42339937 - 2³ = 42339929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42339937.

It is not a weakly prime, because it can be changed into another prime (42339931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21169968 + 21169969.

It is an arithmetic number, because the mean of its divisors is an integer number (21169969).

Almost surely, 2^42339937 is an apocalyptic number.

It is an amenable number.

42339937 is a deficient number, since it is larger than the sum of its proper divisors (1).

42339937 is an equidigital number, since it uses as much as digits as its factorization.

42339937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 40.

The square root of 42339937 is about 6506.9145529967. The cubic root of 42339937 is about 348.5379473399.

The spelling of 42339937 in words is "forty-two million, three hundred thirty-nine thousand, nine hundred thirty-seven".