402243013 has 2 divisors, whose sum is σ = 402243014. Its totient is φ = 402243012.

The previous prime is 402242989. The next prime is 402243019. The reversal of 402243013 is 310342204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343842849 + 58400164 = 18543^2 + 7642^2 .

It is a cyclic number.

It is not a de Polignac number, because 402243013 - 2¹³ = 402234821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402243019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201121506 + 201121507.

It is an arithmetic number, because the mean of its divisors is an integer number (201121507).

Almost surely, 2^402243013 is an apocalyptic number.

It is an amenable number.

402243013 is a deficient number, since it is larger than the sum of its proper divisors (1).

402243013 is an equidigital number, since it uses as much as digits as its factorization.

402243013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 402243013 is about 20055.9969335857. The cubic root of 402243013 is about 738.1809552032.

Adding to 402243013 its reverse (310342204), we get a palindrome (712585217).

The spelling of 402243013 in words is "four hundred two million, two hundred forty-three thousand, thirteen".