402651241 has 2 divisors, whose sum is σ = 402651242. Its totient is φ = 402651240.

The previous prime is 402651199. The next prime is 402651251. The reversal of 402651241 is 142156204.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283754025 + 118897216 = 16845^2 + 10904^2 .

It is a cyclic number.

It is not a de Polignac number, because 402651241 - 2¹¹ = 402649193 is a prime.

It is not a weakly prime, because it can be changed into another prime (402651251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201325620 + 201325621.

It is an arithmetic number, because the mean of its divisors is an integer number (201325621).

Almost surely, 2^402651241 is an apocalyptic number.

It is an amenable number.

402651241 is a deficient number, since it is larger than the sum of its proper divisors (1).

402651241 is an equidigital number, since it uses as much as digits as its factorization.

402651241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 402651241 is about 20066.1715581224. The cubic root of 402651241 is about 738.4305922298.

The spelling of 402651241 in words is "four hundred two million, six hundred fifty-one thousand, two hundred forty-one".