420315690 has 64 divisors (see below), whose sum is σ = 1022201856. Its totient is φ = 110602752.

The previous prime is 420315683. The next prime is 420315703. The reversal of 420315690 is 96513024.

It is a super-2 number, since 2×420315690² = 353330558520352200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1097239 + ... + 1097621.

It is an arithmetic number, because the mean of its divisors is an integer number (15971904).

Almost surely, 2^420315690 is an apocalyptic number.

420315690 is an abundant number, since it is smaller than the sum of its proper divisors (601886166).

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

420315690 is a wasteful number, since it uses less digits than its factorization.

420315690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 420315690 is about 20501.6021325164. The cubic root of 420315690 is about 749.0748236453.

The spelling of 420315690 in words is "four hundred twenty million, three hundred fifteen thousand, six hundred ninety".