402188341 has 2 divisors, whose sum is σ = 402188342. Its totient is φ = 402188340.

The previous prime is 402188291. The next prime is 402188377. The reversal of 402188341 is 143881204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229371025 + 172817316 = 15145^2 + 13146^2 .

It is a cyclic number.

It is not a de Polignac number, because 402188341 - 2¹⁷ = 402057269 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402188641) 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, 201094170 + 201094171.

It is an arithmetic number, because the mean of its divisors is an integer number (201094171).

Almost surely, 2^402188341 is an apocalyptic number.

It is an amenable number.

402188341 is a deficient number, since it is larger than the sum of its proper divisors (1).

402188341 is an equidigital number, since it uses as much as digits as its factorization.

402188341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 402188341 is about 20054.6339034149. The cubic root of 402188341 is about 738.1475097018.

The spelling of 402188341 in words is "four hundred two million, one hundred eighty-eight thousand, three hundred forty-one".