42151686 has 32 divisors (see below), whose sum is σ = 88363008. Its totient is φ = 13379520.

The previous prime is 42151679. The next prime is 42151693. The reversal of 42151686 is 68615124.

It is an interprime number because it is at equal distance from previous prime (42151679) and next prime (42151693).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 38235 + ... + 39321.

It is an arithmetic number, because the mean of its divisors is an integer number (2761344).

Almost surely, 2^42151686 is an apocalyptic number.

42151686 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

42151686 is an abundant number, since it is smaller than the sum of its proper divisors (46211322).

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

42151686 is a wasteful number, since it uses less digits than its factorization.

42151686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396.

The product of its digits is 11520, while the sum is 33.

The square root of 42151686 is about 6492.4329800160. The cubic root of 42151686 is about 348.0206256767.

The spelling of 42151686 in words is "forty-two million, one hundred fifty-one thousand, six hundred eighty-six".