402204241261 has 2 divisors, whose sum is σ = 402204241262. Its totient is φ = 402204241260.

The previous prime is 402204241223. The next prime is 402204241349. The reversal of 402204241261 is 162142402204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 291188665161 + 111015576100 = 539619^2 + 333190^2 .

It is a cyclic number.

It is not a de Polignac number, because 402204241261 - 2⁷ = 402204241133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402204281261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201102120630 + 201102120631.

It is an arithmetic number, because the mean of its divisors is an integer number (201102120631).

Almost surely, 2^402204241261 is an apocalyptic number.

It is an amenable number.

402204241261 is a deficient number, since it is larger than the sum of its proper divisors (1).

402204241261 is an equidigital number, since it uses as much as digits as its factorization.

402204241261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 402204241261 its reverse (162142402204), we get a palindrome (564346643465).

The spelling of 402204241261 in words is "four hundred two billion, two hundred four million, two hundred forty-one thousand, two hundred sixty-one".