42397937 has 2 divisors, whose sum is σ = 42397938. Its totient is φ = 42397936.

The previous prime is 42397921. The next prime is 42397951. The reversal of 42397937 is 73979324.

42397937 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24216241 + 18181696 = 4921^2 + 4264^2 .

It is a cyclic number.

It is not a de Polignac number, because 42397937 - 2⁴ = 42397921 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42397907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21198968 + 21198969.

It is an arithmetic number, because the mean of its divisors is an integer number (21198969).

Almost surely, 2^42397937 is an apocalyptic number.

It is an amenable number.

42397937 is a deficient number, since it is larger than the sum of its proper divisors (1).

42397937 is an equidigital number, since it uses as much as digits as its factorization.

42397937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 285768, while the sum is 44.

The square root of 42397937 is about 6511.3698251597. The cubic root of 42397937 is about 348.6970247082.

It can be divided in two parts, 42397 and 937, that added together give a palindrome (43334).

The spelling of 42397937 in words is "forty-two million, three hundred ninety-seven thousand, nine hundred thirty-seven".