85142205 has 64 divisors (see below), whose sum is σ = 167339520. Its totient is φ = 40854528.

The previous prime is 85142203. The next prime is 85142227. The reversal of 85142205 is 50224158.

It is a happy number.

It is not a de Polignac number, because 85142205 - 2¹ = 85142203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85142201) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51979 + ... + 53591.

It is an arithmetic number, because the mean of its divisors is an integer number (2614680).

Almost surely, 2^85142205 is an apocalyptic number.

85142205 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

85142205 is a deficient number, since it is larger than the sum of its proper divisors (82197315).

85142205 is a wasteful number, since it uses less digits than its factorization.

85142205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667 (or 1661 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 85142205 is about 9227.2533833205. The cubic root of 85142205 is about 439.9280271395.

The spelling of 85142205 in words is "eighty-five million, one hundred forty-two thousand, two hundred five".