420422403 has 16 divisors (see below), whose sum is σ = 586582016. Its totient is φ = 267520320.

The previous prime is 420422389. The next prime is 420422407. The reversal of 420422403 is 304224024.

It is not a de Polignac number, because 420422403 - 2⁵ = 420422371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420422403.

It is not an unprimeable number, because it can be changed into a prime (420422407) 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, 24175 + ... + 37752.

It is an arithmetic number, because the mean of its divisors is an integer number (36661376).

Almost surely, 2^420422403 is an apocalyptic number.

420422403 is a deficient number, since it is larger than the sum of its proper divisors (166159613).

420422403 is a wasteful number, since it uses less digits than its factorization.

420422403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62034.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 420422403 is about 20504.2045200491. The cubic root of 420422403 is about 749.1382119188.

Adding to 420422403 its reverse (304224024), we get a palindrome (724646427).

The spelling of 420422403 in words is "four hundred twenty million, four hundred twenty-two thousand, four hundred three".