42406637 has 16 divisors (see below), whose sum is σ = 52346112. Its totient is φ = 33454080.

The previous prime is 42406627. The next prime is 42406657. The reversal of 42406637 is 73660424.

42406637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 42406637 - 2⁴ = 42406621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42406627) 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 in 15 ways as a sum of consecutive naturals, for example, 57968 + ... + 58694.

It is an arithmetic number, because the mean of its divisors is an integer number (3271632).

Almost surely, 2^42406637 is an apocalyptic number.

It is an amenable number.

42406637 is a deficient number, since it is larger than the sum of its proper divisors (9939475).

42406637 is a wasteful number, since it uses less digits than its factorization.

42406637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 42406637 is about 6512.0378530841. The cubic root of 42406637 is about 348.7208737982.

The spelling of 42406637 in words is "forty-two million, four hundred six thousand, six hundred thirty-seven".