402422443 has 2 divisors, whose sum is σ = 402422444. Its totient is φ = 402422442.

The previous prime is 402422417. The next prime is 402422459. The reversal of 402422443 is 344224204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402422443 - 2⁵ = 402422411 is a prime.

It is not a weakly prime, because it can be changed into another prime (402422483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201211221 + 201211222.

It is an arithmetic number, because the mean of its divisors is an integer number (201211222).

Almost surely, 2^402422443 is an apocalyptic number.

402422443 is a deficient number, since it is larger than the sum of its proper divisors (1).

402422443 is an equidigital number, since it uses as much as digits as its factorization.

402422443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 402422443 is about 20060.4696605040. The cubic root of 402422443 is about 738.2906999056.

Adding to 402422443 its reverse (344224204), we get a palindrome (746646647).

The spelling of 402422443 in words is "four hundred two million, four hundred twenty-two thousand, four hundred forty-three".