85142218 has 16 divisors (see below), whose sum is σ = 146703744. Its totient is φ = 36303120.

The previous prime is 85142203. The next prime is 85142227. The reversal of 85142218 is 81224158.

It is a self number, because there is not a number n which added to its sum of digits gives 85142218.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12678 + ... + 18193.

It is an arithmetic number, because the mean of its divisors is an integer number (9168984).

Almost surely, 2^85142218 is an apocalyptic number.

85142218 is a deficient number, since it is larger than the sum of its proper divisors (61561526).

85142218 is a wasteful number, since it uses less digits than its factorization.

85142218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31077.

The product of its digits is 5120, while the sum is 31.

The square root of 85142218 is about 9227.2540877555. The cubic root of 85142218 is about 439.9280495298.

The spelling of 85142218 in words is "eighty-five million, one hundred forty-two thousand, two hundred eighteen".