402122124389 has 2 divisors, whose sum is σ = 402122124390. Its totient is φ = 402122124388.

The previous prime is 402122124343. The next prime is 402122124419. The reversal of 402122124389 is 983421221204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 319629668164 + 82492456225 = 565358^2 + 287215^2 .

It is a cyclic number.

It is not a de Polignac number, because 402122124389 - 2²⁰ = 402121075813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402122121389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201061062194 + 201061062195.

It is an arithmetic number, because the mean of its divisors is an integer number (201061062195).

Almost surely, 2^402122124389 is an apocalyptic number.

It is an amenable number.

402122124389 is a deficient number, since it is larger than the sum of its proper divisors (1).

402122124389 is an equidigital number, since it uses as much as digits as its factorization.

402122124389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 402122124389 in words is "four hundred two billion, one hundred twenty-two million, one hundred twenty-four thousand, three hundred eighty-nine".