402221303 has 6 divisors (see below), whose sum is σ = 442111152. Its totient is φ = 365655620.

The previous prime is 402221299. The next prime is 402221321. The reversal of 402221303 is 303122204.

It is not a de Polignac number, because 402221303 - 2² = 402221299 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402221333) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1661951 + ... + 1662192.

It is an arithmetic number, because the mean of its divisors is an integer number (73685192).

Almost surely, 2^402221303 is an apocalyptic number.

402221303 is a deficient number, since it is larger than the sum of its proper divisors (39889849).

402221303 is a wasteful number, since it uses less digits than its factorization.

402221303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3324165 (or 3324154 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 402221303 is about 20055.4556916566. The cubic root of 402221303 is about 738.1676745111.

Adding to 402221303 its reverse (303122204), we get a palindrome (705343507).

Subtracting from 402221303 its reverse (303122204), we obtain a palindrome (99099099).

The spelling of 402221303 in words is "four hundred two million, two hundred twenty-one thousand, three hundred three".