42570137 has 4 divisors (see below), whose sum is σ = 42825216. Its totient is φ = 42315060.

The previous prime is 42570133. The next prime is 42570163. The reversal of 42570137 is 73107524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42570137 - 2² = 42570133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42570133) 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 3 ways as a sum of consecutive naturals, for example, 127289 + ... + 127622.

It is an arithmetic number, because the mean of its divisors is an integer number (10706304).

Almost surely, 2^42570137 is an apocalyptic number.

It is an amenable number.

42570137 is a deficient number, since it is larger than the sum of its proper divisors (255079).

42570137 is a wasteful number, since it uses less digits than its factorization.

42570137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255078.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 42570137 is about 6524.5794500489. The cubic root of 42570137 is about 349.1684668167.

The spelling of 42570137 in words is "forty-two million, five hundred seventy thousand, one hundred thirty-seven".