420316418 has 4 divisors (see below), whose sum is σ = 630474630. Its totient is φ = 210158208.

The previous prime is 420316417. The next prime is 420316427. The reversal of 420316418 is 814613024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 348456889 + 71859529 = 18667^2 + 8477^2 .

It is not an unprimeable number, because it can be changed into a prime (420316417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105079103 + ... + 105079106.

Almost surely, 2^420316418 is an apocalyptic number.

420316418 is a deficient number, since it is larger than the sum of its proper divisors (210158212).

420316418 is a wasteful number, since it uses less digits than its factorization.

420316418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210158211.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 420316418 is about 20501.6198872187. The cubic root of 420316418 is about 749.0752561188.

The spelling of 420316418 in words is "four hundred twenty million, three hundred sixteen thousand, four hundred eighteen".