42131646 has 24 divisors (see below), whose sum is σ = 93229344. Its totient is φ = 13744800.

The previous prime is 42131623. The next prime is 42131657. The reversal of 42131646 is 64613124.

42131646 is a `hidden beast` number, since 4 + 2 + 13 + 1 + 646 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24055 + ... + 25746.

It is an arithmetic number, because the mean of its divisors is an integer number (3884556).

Almost surely, 2^42131646 is an apocalyptic number.

42131646 is an abundant number, since it is smaller than the sum of its proper divisors (51097698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42131646 is a wasteful number, since it uses less digits than its factorization.

42131646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49856 (or 49853 counting only the distinct ones).

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

The square root of 42131646 is about 6490.8894613913. The cubic root of 42131646 is about 347.9654642700.

The spelling of 42131646 in words is "forty-two million, one hundred thirty-one thousand, six hundred forty-six".