85805142 has 16 divisors (see below), whose sum is σ = 177528240. Its totient is φ = 27615392.

The previous prime is 85805089. The next prime is 85805143. The reversal of 85805142 is 24150858.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85805143) 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, 246393 + ... + 246740.

It is an arithmetic number, because the mean of its divisors is an integer number (11095515).

Almost surely, 2^85805142 is an apocalyptic number.

85805142 is an abundant number, since it is smaller than the sum of its proper divisors (91723098).

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

85805142 is a wasteful number, since it uses less digits than its factorization.

85805142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493167.

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 85805142 is about 9263.1064983622. The cubic root of 85805142 is about 441.0668704290.

The spelling of 85805142 in words is "eighty-five million, eight hundred five thousand, one hundred forty-two".