420861594 has 16 divisors (see below), whose sum is σ = 859632768. Its totient is φ = 137302272.

The previous prime is 420861589. The next prime is 420861653. The reversal of 420861594 is 495168024.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745927 + ... + 746490.

It is an arithmetic number, because the mean of its divisors is an integer number (53727048).

Almost surely, 2^420861594 is an apocalyptic number.

420861594 is an abundant number, since it is smaller than the sum of its proper divisors (438771174).

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

420861594 is a wasteful number, since it uses less digits than its factorization.

420861594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492469.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 420861594 is about 20514.9115035868. The cubic root of 420861594 is about 749.3989816090.

The spelling of 420861594 in words is "four hundred twenty million, eight hundred sixty-one thousand, five hundred ninety-four".