84001420458 has 48 divisors (see below), whose sum is σ = 188858869056. Its totient is φ = 26964080640.

The previous prime is 84001420439. The next prime is 84001420469. The reversal of 84001420458 is 85402410048.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 709335 + ... + 819242.

It is an arithmetic number, because the mean of its divisors is an integer number (3934559772).

Almost surely, 2^84001420458 is an apocalyptic number.

84001420458 is an abundant number, since it is smaller than the sum of its proper divisors (104857448598).

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

84001420458 is a wasteful number, since it uses less digits than its factorization.

84001420458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528699 (or 1528696 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

The spelling of 84001420458 in words is "eighty-four billion, one million, four hundred twenty thousand, four hundred fifty-eight".