420508870 has 32 divisors (see below), whose sum is σ = 764225280. Its totient is φ = 166588800.

The previous prime is 420508861. The next prime is 420508873. The reversal of 420508870 is 78805024.

It is a super-3 number, since 3×420508870³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420508873) 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, 599520 + ... + 600220.

It is an arithmetic number, because the mean of its divisors is an integer number (23882040).

Almost surely, 2^420508870 is an apocalyptic number.

420508870 is a deficient number, since it is larger than the sum of its proper divisors (343716410).

420508870 is a wasteful number, since it uses less digits than its factorization.

420508870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 420508870 is about 20506.3129304124. The cubic root of 420508870 is about 749.1895660594.

The spelling of 420508870 in words is "four hundred twenty million, five hundred eight thousand, eight hundred seventy".