402041251 has 2 divisors, whose sum is σ = 402041252. Its totient is φ = 402041250.

The previous prime is 402041221. The next prime is 402041257. The reversal of 402041251 is 152140204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402041251 - 2⁹ = 402040739 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (402041257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201020625 + 201020626.

It is an arithmetic number, because the mean of its divisors is an integer number (201020626).

Almost surely, 2^402041251 is an apocalyptic number.

402041251 is a deficient number, since it is larger than the sum of its proper divisors (1).

402041251 is an equidigital number, since it uses as much as digits as its factorization.

402041251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 402041251 is about 20050.9663358153. The cubic root of 402041251 is about 738.0575125994.

Adding to 402041251 its reverse (152140204), we get a palindrome (554181455).

The spelling of 402041251 in words is "four hundred two million, forty-one thousand, two hundred fifty-one".