840054512 has 40 divisors (see below), whose sum is σ = 1823572272. Its totient is φ = 371520000.

The previous prime is 840054503. The next prime is 840054533. The reversal of 840054512 is 215450048.

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 7 ways as a sum of consecutive naturals, for example, 57989 + ... + 71012.

Almost surely, 2^840054512 is an apocalyptic number.

It is an amenable number.

840054512 is an abundant number, since it is smaller than the sum of its proper divisors (983517760).

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

840054512 is a wasteful number, since it uses less digits than its factorization.

840054512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129057 (or 129051 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 840054512 is about 28983.6938984664. The cubic root of 840054512 is about 943.5592060134.

The spelling of 840054512 in words is "eight hundred forty million, fifty-four thousand, five hundred twelve".