402142202089 has 2 divisors, whose sum is σ = 402142202090. Its totient is φ = 402142202088.

The previous prime is 402142202081. The next prime is 402142202153. The reversal of 402142202089 is 980202241204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391031355625 + 11110846464 = 625325^2 + 105408^2 .

It is a cyclic number.

It is not a de Polignac number, because 402142202089 - 2³ = 402142202081 is a prime.

It is not a weakly prime, because it can be changed into another prime (402142202081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201071101044 + 201071101045.

It is an arithmetic number, because the mean of its divisors is an integer number (201071101045).

Almost surely, 2^402142202089 is an apocalyptic number.

It is an amenable number.

402142202089 is a deficient number, since it is larger than the sum of its proper divisors (1).

402142202089 is an equidigital number, since it uses as much as digits as its factorization.

402142202089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 402142202089 in words is "four hundred two billion, one hundred forty-two million, two hundred two thousand, eighty-nine".