85949540242 has 4 divisors (see below), whose sum is σ = 128924310366. Its totient is φ = 42974770120.

The previous prime is 85949540233. The next prime is 85949540269. The reversal of 85949540242 is 24204594958.

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., 81933910081 + 4015630161 = 286241^2 + 63369^2 .

It is a super-2 number, since 2×85949540242² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85949540242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21487385059 + ... + 21487385062.

Almost surely, 2^85949540242 is an apocalyptic number.

85949540242 is a deficient number, since it is larger than the sum of its proper divisors (42974770124).

85949540242 is a wasteful number, since it uses less digits than its factorization.

85949540242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42974770123.

The product of its (nonzero) digits is 4147200, while the sum is 52.

The spelling of 85949540242 in words is "eighty-five billion, nine hundred forty-nine million, five hundred forty thousand, two hundred forty-two".