785084642 has 4 divisors (see below), whose sum is σ = 1177626966. Its totient is φ = 392542320.

The previous prime is 785084639. The next prime is 785084683. The reversal of 785084642 is 246480587.

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., 580279921 + 204804721 = 24089^2 + 14311^2 .

It is a junction number, because it is equal to n+sod(n) for n = 785084593 and 785084602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196271159 + ... + 196271162.

Almost surely, 2^785084642 is an apocalyptic number.

785084642 is a deficient number, since it is larger than the sum of its proper divisors (392542324).

785084642 is a wasteful number, since it uses less digits than its factorization.

785084642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392542323.

The product of its (nonzero) digits is 430080, while the sum is 44.

The square root of 785084642 is about 28019.3619127917. The cubic root of 785084642 is about 922.5122897480.

The spelling of 785084642 in words is "seven hundred eighty-five million, eighty-four thousand, six hundred forty-two".