84804842 has 4 divisors (see below), whose sum is σ = 127207266. Its totient is φ = 42402420.

The previous prime is 84804833. The next prime is 84804859. The reversal of 84804842 is 24840848.

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., 80263681 + 4541161 = 8959^2 + 2131^2 .

It is a super-2 number, since 2×84804842² = 14383722453289928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84804796 and 84804805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21201209 + ... + 21201212.

Almost surely, 2^84804842 is an apocalyptic number.

84804842 is a deficient number, since it is larger than the sum of its proper divisors (42402424).

84804842 is a wasteful number, since it uses less digits than its factorization.

84804842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42402423.

The product of its (nonzero) digits is 65536, while the sum is 38.

The square root of 84804842 is about 9208.9544466242. The cubic root of 84804842 is about 439.3462087719.

The spelling of 84804842 in words is "eighty-four million, eight hundred four thousand, eight hundred forty-two".