84042394 has 8 divisors (see below), whose sum is σ = 127179540. Its totient is φ = 41649216.

The previous prime is 84042353. The next prime is 84042419. The reversal of 84042394 is 49324048.

It can be written as a sum of positive squares in 2 ways, for example, as 59490369 + 24552025 = 7713^2 + 4955^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185709 + ... + 186160.

Almost surely, 2^84042394 is an apocalyptic number.

84042394 is a deficient number, since it is larger than the sum of its proper divisors (43137146).

84042394 is a wasteful number, since it uses less digits than its factorization.

84042394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371984.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 84042394 is about 9167.4638804852. The cubic root of 84042394 is about 438.0255783176.

It can be divided in two parts, 840 and 42394, that added together give a palindrome (43234).

The spelling of 84042394 in words is "eighty-four million, forty-two thousand, three hundred ninety-four".