420140260 has 12 divisors (see below), whose sum is σ = 882294588. Its totient is φ = 168056096.

The previous prime is 420140219. The next prime is 420140297. The reversal of 420140260 is 62041024.

It can be written as a sum of positive squares in 2 ways, for example, as 254657764 + 165482496 = 15958^2 + 12864^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10503487 + ... + 10503526.

It is an arithmetic number, because the mean of its divisors is an integer number (73524549).

Almost surely, 2^420140260 is an apocalyptic number.

It is an amenable number.

420140260 is an abundant number, since it is smaller than the sum of its proper divisors (462154328).

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

420140260 is a wasteful number, since it uses less digits than its factorization.

420140260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21007022 (or 21007020 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 420140260 is about 20497.3232398770. The cubic root of 420140260 is about 748.9705936692.

Adding to 420140260 its reverse (62041024), we get a palindrome (482181284).

The spelling of 420140260 in words is "four hundred twenty million, one hundred forty thousand, two hundred sixty".