420581502 has 24 divisors (see below), whose sum is σ = 994102200. Its totient is φ = 127448880.

The previous prime is 420581489. The next prime is 420581503. The reversal of 420581502 is 205185024.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420581503) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1061877 + ... + 1062272.

It is an arithmetic number, because the mean of its divisors is an integer number (41420925).

Almost surely, 2^420581502 is an apocalyptic number.

420581502 is an abundant number, since it is smaller than the sum of its proper divisors (573520698).

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

420581502 is a wasteful number, since it uses less digits than its factorization.

420581502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124168 (or 2124165 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 420581502 is about 20508.0838207766. The cubic root of 420581502 is about 749.2326979311.

The spelling of 420581502 in words is "four hundred twenty million, five hundred eighty-one thousand, five hundred two".