85197542 has 4 divisors (see below), whose sum is σ = 127796316. Its totient is φ = 42598770.

The previous prime is 85197533. The next prime is 85197551. The reversal of 85197542 is 24579158.

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

It is an interprime number because it is at equal distance from previous prime (85197533) and next prime (85197551).

It is a self number, because there is not a number n which added to its sum of digits gives 85197542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21299384 + ... + 21299387.

It is an arithmetic number, because the mean of its divisors is an integer number (31949079).

Almost surely, 2^85197542 is an apocalyptic number.

85197542 is a deficient number, since it is larger than the sum of its proper divisors (42598774).

85197542 is a wasteful number, since it uses less digits than its factorization.

85197542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42598773.

The product of its digits is 100800, while the sum is 41.

The square root of 85197542 is about 9230.2514591965. The cubic root of 85197542 is about 440.0233148803.

It can be divided in two parts, 8519 and 7542, that added together give a palindrome (16061).

The spelling of 85197542 in words is "eighty-five million, one hundred ninety-seven thousand, five hundred forty-two".