420405310 has 16 divisors (see below), whose sum is σ = 814939776. Its totient is φ = 155226528.

The previous prime is 420405287. The next prime is 420405311. The reversal of 420405310 is 13504024.

It is a super-2 number, since 2×420405310² = 353481249352392200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420405311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1616814 + ... + 1617073.

It is an arithmetic number, because the mean of its divisors is an integer number (50933736).

Almost surely, 2^420405310 is an apocalyptic number.

420405310 is a deficient number, since it is larger than the sum of its proper divisors (394534466).

420405310 is a wasteful number, since it uses less digits than its factorization.

420405310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3233907.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 420405310 is about 20503.7876988619. The cubic root of 420405310 is about 749.1280592779.

Adding to 420405310 its reverse (13504024), we get a palindrome (433909334).

The spelling of 420405310 in words is "four hundred twenty million, four hundred five thousand, three hundred ten".