42439601 has 2 divisors, whose sum is σ = 42439602. Its totient is φ = 42439600.

The previous prime is 42439583. The next prime is 42439679. The reversal of 42439601 is 10693424.

42439601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35988001 + 6451600 = 5999^2 + 2540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42439601 is a prime.

It is a super-2 number, since 2×42439601² = 3602239466078402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42438601) 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, 21219800 + 21219801.

It is an arithmetic number, because the mean of its divisors is an integer number (21219801).

Almost surely, 2^42439601 is an apocalyptic number.

It is an amenable number.

42439601 is a deficient number, since it is larger than the sum of its proper divisors (1).

42439601 is an equidigital number, since it uses as much as digits as its factorization.

42439601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 42439601 is about 6514.5683663617. The cubic root of 42439601 is about 348.8112075953.

The spelling of 42439601 in words is "forty-two million, four hundred thirty-nine thousand, six hundred one".