85319642 has 8 divisors (see below), whose sum is σ = 128162100. Its totient is φ = 42598944.

The previous prime is 85319639. The next prime is 85319683. The reversal of 85319642 is 24691358.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 83704201 + 1615441 = 9149^2 + 1271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×85319642² = 14558882622016328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85319596 and 85319605.

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 3 ways as a sum of consecutive naturals, for example, 28667 + ... + 31502.

Almost surely, 2^85319642 is an apocalyptic number.

85319642 is a deficient number, since it is larger than the sum of its proper divisors (42842458).

85319642 is a wasteful number, since it uses less digits than its factorization.

85319642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60880.

The product of its digits is 51840, while the sum is 38.

The square root of 85319642 is about 9236.8632121516. The cubic root of 85319642 is about 440.2334195377.

The spelling of 85319642 in words is "eighty-five million, three hundred nineteen thousand, six hundred forty-two".