84063842 has 4 divisors (see below), whose sum is σ = 126095766. Its totient is φ = 42031920.

The previous prime is 84063841. The next prime is 84063851. The reversal of 84063842 is 24836048.

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., 77246521 + 6817321 = 8789^2 + 2611^2 .

It is not an unprimeable number, because it can be changed into a prime (84063841) by changing a digit.

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, 21015959 + ... + 21015962.

Almost surely, 2^84063842 is an apocalyptic number.

84063842 is a deficient number, since it is larger than the sum of its proper divisors (42031924).

84063842 is a wasteful number, since it uses less digits than its factorization.

84063842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42031923.

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 84063842 is about 9168.6335950348. The cubic root of 84063842 is about 438.0628371861.

The spelling of 84063842 in words is "eighty-four million, sixty-three thousand, eight hundred forty-two".