42137613 has 12 divisors (see below), whose sum is σ = 69560608. Its totient is φ = 24078600.

The previous prime is 42137581. The next prime is 42137621. The reversal of 42137613 is 31673124.

42137613 is a `hidden beast` number, since 42 + 1 + 3 + 7 + 613 = 666.

It is not a de Polignac number, because 42137613 - 2⁵ = 42137581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42137663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 334363 + ... + 334488.

Almost surely, 2^42137613 is an apocalyptic number.

It is an amenable number.

42137613 is a deficient number, since it is larger than the sum of its proper divisors (27422995).

42137613 is a wasteful number, since it uses less digits than its factorization.

42137613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668864 (or 668861 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 42137613 is about 6491.3490893650. The cubic root of 42137613 is about 347.9818906549.

The spelling of 42137613 in words is "forty-two million, one hundred thirty-seven thousand, six hundred thirteen".