402222143 has 2 divisors, whose sum is σ = 402222144. Its totient is φ = 402222142.

The previous prime is 402222133. The next prime is 402222157. The reversal of 402222143 is 341222204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402222143 - 2¹⁰ = 402221119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402222103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201111071 + 201111072.

It is an arithmetic number, because the mean of its divisors is an integer number (201111072).

Almost surely, 2^402222143 is an apocalyptic number.

402222143 is a deficient number, since it is larger than the sum of its proper divisors (1).

402222143 is an equidigital number, since it uses as much as digits as its factorization.

402222143 is an evil number, because the sum of its binary digits is even.

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

The square root of 402222143 is about 20055.4766335782. The cubic root of 402222143 is about 738.1681883745.

Adding to 402222143 its reverse (341222204), we get a palindrome (743444347).

The spelling of 402222143 in words is "four hundred two million, two hundred twenty-two thousand, one hundred forty-three".