402143321227 has 2 divisors, whose sum is σ = 402143321228. Its totient is φ = 402143321226.

The previous prime is 402143321179. The next prime is 402143321257. The reversal of 402143321227 is 722123341204.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402143321227 is a prime.

It is not a weakly prime, because it can be changed into another prime (402143321257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201071660613 + 201071660614.

It is an arithmetic number, because the mean of its divisors is an integer number (201071660614).

Almost surely, 2^402143321227 is an apocalyptic number.

402143321227 is a deficient number, since it is larger than the sum of its proper divisors (1).

402143321227 is an equidigital number, since it uses as much as digits as its factorization.

402143321227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

The spelling of 402143321227 in words is "four hundred two billion, one hundred forty-three million, three hundred twenty-one thousand, two hundred twenty-seven".