85124722 has 4 divisors (see below), whose sum is σ = 127687086. Its totient is φ = 42562360.

The previous prime is 85124647. The next prime is 85124723. The reversal of 85124722 is 22742158.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 82464561 + 2660161 = 9081^2 + 1631^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (85124723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21281179 + ... + 21281182.

Almost surely, 2^85124722 is an apocalyptic number.

85124722 is a deficient number, since it is larger than the sum of its proper divisors (42562364).

85124722 is a wasteful number, since it uses less digits than its factorization.

85124722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42562363.

The product of its digits is 8960, while the sum is 31.

The square root of 85124722 is about 9226.3059780174. The cubic root of 85124722 is about 439.8979136441.

The spelling of 85124722 in words is "eighty-five million, one hundred twenty-four thousand, seven hundred twenty-two".