402421337 has 2 divisors, whose sum is σ = 402421338. Its totient is φ = 402421336.

The previous prime is 402421321. The next prime is 402421343. The reversal of 402421337 is 733124204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 397563721 + 4857616 = 19939^2 + 2204^2 .

It is a cyclic number.

It is not a de Polignac number, because 402421337 - 2⁴ = 402421321 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (402421307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201210668 + 201210669.

It is an arithmetic number, because the mean of its divisors is an integer number (201210669).

Almost surely, 2^402421337 is an apocalyptic number.

It is an amenable number.

402421337 is a deficient number, since it is larger than the sum of its proper divisors (1).

402421337 is an equidigital number, since it uses as much as digits as its factorization.

402421337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 402421337 is about 20060.4420938323. The cubic root of 402421337 is about 738.2900235432.

The spelling of 402421337 in words is "four hundred two million, four hundred twenty-one thousand, three hundred thirty-seven".