403420504321 has 12 divisors (see below), whose sum is σ = 422041672192. Its totient is φ = 385589019816.

The previous prime is 403420504303. The next prime is 403420504349. The reversal of 403420504321 is 123405024304.

It is a happy number.

It is not a de Polignac number, because 403420504321 - 2¹⁷ = 403420373249 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 403420504321.

It is not an unprimeable number, because it can be changed into a prime (403420544321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 414640 + ... + 989326.

Almost surely, 2^403420504321 is an apocalyptic number.

It is an amenable number.

403420504321 is a deficient number, since it is larger than the sum of its proper divisors (18621167871).

403420504321 is a wasteful number, since it uses less digits than its factorization.

403420504321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576060 (or 576037 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 403420504321 its reverse (123405024304), we get a palindrome (526825528625).

The spelling of 403420504321 in words is "four hundred three billion, four hundred twenty million, five hundred four thousand, three hundred twenty-one".