42646131 has 12 divisors (see below), whose sum is σ = 67200120. Its totient is φ = 25846080.

The previous prime is 42646063. The next prime is 42646187. The reversal of 42646131 is 13164624.

42646131 is a `hidden beast` number, since 4 + 2 + 646 + 13 + 1 = 666.

It is not a de Polignac number, because 42646131 - 2⁷ = 42646003 is a prime.

It is a super-2 number, since 2×42646131² = 3637384978538322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42646095 and 42646104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42646031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215286 + ... + 215483.

It is an arithmetic number, because the mean of its divisors is an integer number (5600010).

Almost surely, 2^42646131 is an apocalyptic number.

42646131 is a deficient number, since it is larger than the sum of its proper divisors (24553989).

42646131 is a wasteful number, since it uses less digits than its factorization.

42646131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430786 (or 430783 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 42646131 is about 6530.4005237045. The cubic root of 42646131 is about 349.3761157816.

The spelling of 42646131 in words is "forty-two million, six hundred forty-six thousand, one hundred thirty-one".