84999942 has 32 divisors (see below), whose sum is σ = 191230560. Its totient is φ = 28331856.

The previous prime is 84999931. The next prime is 84999979. The reversal of 84999942 is 24999948.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 5343 + ... + 14090.

It is an arithmetic number, because the mean of its divisors is an integer number (5975955).

Almost surely, 2^84999942 is an apocalyptic number.

84999942 is an abundant number, since it is smaller than the sum of its proper divisors (106230618).

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

84999942 is an equidigital number, since it uses as much as digits as its factorization.

84999942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19456 (or 19438 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 84999942 is about 9219.5413118007. The cubic root of 84999942 is about 439.6828672095.

The spelling of 84999942 in words is "eighty-four million, nine hundred ninety-nine thousand, nine hundred forty-two".