420413856 has 24 divisors (see below), whose sum is σ = 1103586624. Its totient is φ = 140137920.

The previous prime is 420413837. The next prime is 420413857. The reversal of 420413856 is 658314024.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (420413857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2189560 + ... + 2189751.

It is an arithmetic number, because the mean of its divisors is an integer number (45982776).

Almost surely, 2^420413856 is an apocalyptic number.

It is an amenable number.

420413856 is an abundant number, since it is smaller than the sum of its proper divisors (683172768).

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

420413856 is a wasteful number, since it uses less digits than its factorization.

420413856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4379324 (or 4379316 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 420413856 is about 20503.9960983219. The cubic root of 420413856 is about 749.1331353358.

The spelling of 420413856 in words is "four hundred twenty million, four hundred thirteen thousand, eight hundred fifty-six".