85471242 has 16 divisors (see below), whose sum is σ = 173003040. Its totient is φ = 28146992.

The previous prime is 85471241. The next prime is 85471249. The reversal of 85471242 is 24217458.

It is not an unprimeable number, because it can be changed into a prime (85471241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85317 + ... + 86312.

It is an arithmetic number, because the mean of its divisors is an integer number (10812690).

Almost surely, 2^85471242 is an apocalyptic number.

85471242 is an abundant number, since it is smaller than the sum of its proper divisors (87531798).

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

85471242 is a wasteful number, since it uses less digits than its factorization.

85471242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171717.

The product of its digits is 17920, while the sum is 33.

The square root of 85471242 is about 9245.0658191275. The cubic root of 85471242 is about 440.4940078198.

Adding to 85471242 its sum of digits (33), we get a triangular number (85471275 = T₁₃₀₇₄).

The spelling of 85471242 in words is "eighty-five million, four hundred seventy-one thousand, two hundred forty-two".