156642086 has 16 divisors (see below), whose sum is σ = 238650000. Its totient is φ = 77096448.

The previous prime is 156642049. The next prime is 156642103. The reversal of 156642086 is 680246651.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124790 + ... + 126038.

It is an arithmetic number, because the mean of its divisors is an integer number (14915625).

Almost surely, 2^156642086 is an apocalyptic number.

156642086 is a deficient number, since it is larger than the sum of its proper divisors (82007914).

156642086 is a wasteful number, since it uses less digits than its factorization.

156642086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 156642086 is about 12515.6736135136. The cubic root of 156642086 is about 539.0588154914.

The spelling of 156642086 in words is "one hundred fifty-six million, six hundred forty-two thousand, eighty-six".