402322241 has 4 divisors (see below), whose sum is σ = 402395184. Its totient is φ = 402249300.

The previous prime is 402322237. The next prime is 402322259. The reversal of 402322241 is 142223204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402322241 - 2² = 402322237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (402322231) 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, 27455 + ... + 39476.

It is an arithmetic number, because the mean of its divisors is an integer number (100598796).

Almost surely, 2^402322241 is an apocalyptic number.

It is an amenable number.

402322241 is a deficient number, since it is larger than the sum of its proper divisors (72943).

402322241 is an equidigital number, since it uses as much as digits as its factorization.

402322241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72942.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 402322241 is about 20057.9720061625. The cubic root of 402322241 is about 738.2294174176.

Adding to 402322241 its reverse (142223204), we get a palindrome (544545445).

The spelling of 402322241 in words is "four hundred two million, three hundred twenty-two thousand, two hundred forty-one".