86817242 has 16 divisors (see below), whose sum is σ = 135111240. Its totient is φ = 41788992.

The previous prime is 86817209. The next prime is 86817257. The reversal of 86817242 is 24271868.

It can be written as a sum of positive squares in 4 ways, for example, as 84254041 + 2563201 = 9179^2 + 1601^2 .

It is a junction number, because it is equal to n+sod(n) for n = 86817196 and 86817205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19628 + ... + 23640.

Almost surely, 2^86817242 is an apocalyptic number.

86817242 is a deficient number, since it is larger than the sum of its proper divisors (48293998).

86817242 is a wasteful number, since it uses less digits than its factorization.

86817242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4417.

The product of its digits is 43008, while the sum is 38.

The square root of 86817242 is about 9317.5770455629. The cubic root of 86817242 is about 442.7942728550.

The spelling of 86817242 in words is "eighty-six million, eight hundred seventeen thousand, two hundred forty-two".