421902763 has 4 divisors (see below), whose sum is σ = 425224960. Its totient is φ = 418580568.

The previous prime is 421902757. The next prime is 421902781. The reversal of 421902763 is 367209124.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421902763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421902863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1660908 + ... + 1661161.

It is an arithmetic number, because the mean of its divisors is an integer number (106306240).

Almost surely, 2^421902763 is an apocalyptic number.

421902763 is a deficient number, since it is larger than the sum of its proper divisors (3322197).

421902763 is a wasteful number, since it uses less digits than its factorization.

421902763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322196.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 421902763 is about 20540.2717362746. The cubic root of 421902763 is about 750.0164517873.

The spelling of 421902763 in words is "four hundred twenty-one million, nine hundred two thousand, seven hundred sixty-three".