421287025403 has 32 divisors (see below), whose sum is σ = 464901120000. Its totient is φ = 380193270912.

The previous prime is 421287025391. The next prime is 421287025421. The reversal of 421287025403 is 304520782124.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 421287025403 - 2²⁴ = 421270248187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421287025483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79350713 + ... + 79356021.

It is an arithmetic number, because the mean of its divisors is an integer number (14528160000).

Almost surely, 2^421287025403 is an apocalyptic number.

421287025403 is a deficient number, since it is larger than the sum of its proper divisors (43614094597).

421287025403 is a wasteful number, since it uses less digits than its factorization.

421287025403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7259.

The product of its (nonzero) digits is 107520, while the sum is 38.

The spelling of 421287025403 in words is "four hundred twenty-one billion, two hundred eighty-seven million, twenty-five thousand, four hundred three".