402342229 has 2 divisors, whose sum is σ = 402342230. Its totient is φ = 402342228.

The previous prime is 402342163. The next prime is 402342293. The reversal of 402342229 is 922243204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 379080900 + 23261329 = 19470^2 + 4823^2 .

It is a cyclic number.

It is not a de Polignac number, because 402342229 - 2²¹ = 400245077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402342197 and 402342206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402342929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201171114 + 201171115.

It is an arithmetic number, because the mean of its divisors is an integer number (201171115).

Almost surely, 2^402342229 is an apocalyptic number.

It is an amenable number.

402342229 is a deficient number, since it is larger than the sum of its proper divisors (1).

402342229 is an equidigital number, since it uses as much as digits as its factorization.

402342229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 402342229 is about 20058.4702557299. The cubic root of 402342229 is about 738.2416426802.

The spelling of 402342229 in words is "four hundred two million, three hundred forty-two thousand, two hundred twenty-nine".