85520242 has 4 divisors (see below), whose sum is σ = 128280366. Its totient is φ = 42760120.

The previous prime is 85520221. The next prime is 85520269. The reversal of 85520242 is 24202558.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24202558 = 2 ⋅12101279.

It can be written as a sum of positive squares in only one way, i.e., 43283241 + 42237001 = 6579^2 + 6499^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 85520242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21380059 + ... + 21380062.

Almost surely, 2^85520242 is an apocalyptic number.

85520242 is a deficient number, since it is larger than the sum of its proper divisors (42760124).

85520242 is a wasteful number, since it uses less digits than its factorization.

85520242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42760123.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 85520242 is about 9247.7155016793. The cubic root of 85520242 is about 440.5781690047.

The spelling of 85520242 in words is "eighty-five million, five hundred twenty thousand, two hundred forty-two".