42590187 has 24 divisors (see below), whose sum is σ = 63842688. Its totient is φ = 27331200.

The previous prime is 42590159. The next prime is 42590189. The reversal of 42590187 is 78109524.

It is a de Polignac number, because none of the positive numbers 2^k-42590187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42590189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81487 + ... + 82007.

It is an arithmetic number, because the mean of its divisors is an integer number (2660112).

Almost surely, 2^42590187 is an apocalyptic number.

42590187 is a deficient number, since it is larger than the sum of its proper divisors (21252501).

42590187 is a wasteful number, since it uses less digits than its factorization.

42590187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851 (or 848 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 42590187 is about 6526.1157666716. The cubic root of 42590187 is about 349.2232762007.

The spelling of 42590187 in words is "forty-two million, five hundred ninety thousand, one hundred eighty-seven".