42506137 has 8 divisors (see below), whose sum is σ = 45770400. Its totient is φ = 39326784.

The previous prime is 42506119. The next prime is 42506183. The reversal of 42506137 is 73160524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42506137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42506117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20187 + ... + 22192.

It is an arithmetic number, because the mean of its divisors is an integer number (5721300).

Almost surely, 2^42506137 is an apocalyptic number.

It is an amenable number.

42506137 is a deficient number, since it is larger than the sum of its proper divisors (3264263).

42506137 is a wasteful number, since it uses less digits than its factorization.

42506137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42455.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 42506137 is about 6519.6730746258. The cubic root of 42506137 is about 348.9933989441.

The spelling of 42506137 in words is "forty-two million, five hundred six thousand, one hundred thirty-seven".