851069420 has 48 divisors (see below), whose sum is σ = 1829278080. Its totient is φ = 332454144.

The previous prime is 851069411. The next prime is 851069423. The reversal of 851069420 is 24960158.

It is not an unprimeable number, because it can be changed into a prime (851069423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665822 + ... + 667098.

It is an arithmetic number, because the mean of its divisors is an integer number (38109960).

Almost surely, 2^851069420 is an apocalyptic number.

It is an amenable number.

851069420 is an abundant number, since it is smaller than the sum of its proper divisors (978208660).

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

851069420 is a wasteful number, since it uses less digits than its factorization.

851069420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042 (or 2040 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 851069420 is about 29173.0941108412. The cubic root of 851069420 is about 947.6653364216.

The spelling of 851069420 in words is "eight hundred fifty-one million, sixty-nine thousand, four hundred twenty".