84279042 has 20 divisors (see below), whose sum is σ = 188847846. Its totient is φ = 28092960.

The previous prime is 84279001. The next prime is 84279073. The reversal of 84279042 is 24097248.

It can be written as a sum of positive squares in only one way, i.e., 44475561 + 39803481 = 6669^2 + 6309^2 .

It is a junction number, because it is equal to n+sod(n) for n = 84278988 and 84279006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 259959 + ... + 260282.

Almost surely, 2^84279042 is an apocalyptic number.

84279042 is an abundant number, since it is smaller than the sum of its proper divisors (104568804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84279042 is a wasteful number, since it uses less digits than its factorization.

84279042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520255 (or 520246 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 84279042 is about 9180.3617575780. The cubic root of 84279042 is about 438.4363263151.

The spelling of 84279042 in words is "eighty-four million, two hundred seventy-nine thousand, forty-two".