402421441417 has 2 divisors, whose sum is σ = 402421441418. Its totient is φ = 402421441416.

The previous prime is 402421441403. The next prime is 402421441421. The reversal of 402421441417 is 714144124204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309381800841 + 93039640576 = 556221^2 + 305024^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402421441417 is a prime.

It is not a weakly prime, because it can be changed into another prime (402421441427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201210720708 + 201210720709.

It is an arithmetic number, because the mean of its divisors is an integer number (201210720709).

Almost surely, 2^402421441417 is an apocalyptic number.

It is an amenable number.

402421441417 is a deficient number, since it is larger than the sum of its proper divisors (1).

402421441417 is an equidigital number, since it uses as much as digits as its factorization.

402421441417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28672, while the sum is 34.

The spelling of 402421441417 in words is "four hundred two billion, four hundred twenty-one million, four hundred forty-one thousand, four hundred seventeen".