85430844242 has 4 divisors (see below), whose sum is σ = 128146266366. Its totient is φ = 42715422120.

The previous prime is 85430844227. The next prime is 85430844341. The reversal of 85430844242 is 24244803458.

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., 70378253521 + 15052590721 = 265289^2 + 122689^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85430844193 and 85430844202.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21357711059 + ... + 21357711062.

Almost surely, 2^85430844242 is an apocalyptic number.

85430844242 is a deficient number, since it is larger than the sum of its proper divisors (42715422124).

85430844242 is a wasteful number, since it uses less digits than its factorization.

85430844242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42715422123.

The product of its (nonzero) digits is 983040, while the sum is 44.

The spelling of 85430844242 in words is "eighty-five billion, four hundred thirty million, eight hundred forty-four thousand, two hundred forty-two".