402132142549 has 2 divisors, whose sum is σ = 402132142550. Its totient is φ = 402132142548.

The previous prime is 402132142547. The next prime is 402132142591. The reversal of 402132142549 is 945241231204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 385852168900 + 16279973649 = 621170^2 + 127593^2 .

It is a cyclic number.

It is not a de Polignac number, because 402132142549 - 2¹ = 402132142547 is a prime.

Together with 402132142547, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402132142547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201066071274 + 201066071275.

It is an arithmetic number, because the mean of its divisors is an integer number (201066071275).

Almost surely, 2^402132142549 is an apocalyptic number.

It is an amenable number.

402132142549 is a deficient number, since it is larger than the sum of its proper divisors (1).

402132142549 is an equidigital number, since it uses as much as digits as its factorization.

402132142549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 402132142549 in words is "four hundred two billion, one hundred thirty-two million, one hundred forty-two thousand, five hundred forty-nine".