85581742 has 16 divisors (see below), whose sum is σ = 131911920. Its totient is φ = 41626368.

The previous prime is 85581737. The next prime is 85581761. The reversal of 85581742 is 24718558.

It is a junction number, because it is equal to n+sod(n) for n = 85581695 and 85581704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7708 + ... + 15184.

It is an arithmetic number, because the mean of its divisors is an integer number (8244495).

Almost surely, 2^85581742 is an apocalyptic number.

85581742 is a deficient number, since it is larger than the sum of its proper divisors (46330178).

85581742 is a wasteful number, since it uses less digits than its factorization.

85581742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7635.

The product of its digits is 89600, while the sum is 40.

The square root of 85581742 is about 9251.0400496377. The cubic root of 85581742 is about 440.6837543971.

The spelling of 85581742 in words is "eighty-five million, five hundred eighty-one thousand, seven hundred forty-two".