420343454417 has 2 divisors, whose sum is σ = 420343454418. Its totient is φ = 420343454416.

The previous prime is 420343454381. The next prime is 420343454473. The reversal of 420343454417 is 714454343024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 353639544976 + 66703909441 = 594676^2 + 258271^2 .

It is a cyclic number.

It is not a de Polignac number, because 420343454417 - 2²⁶ = 420276345553 is a prime.

It is not a weakly prime, because it can be changed into another prime (420343454477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210171727208 + 210171727209.

It is an arithmetic number, because the mean of its divisors is an integer number (210171727209).

Almost surely, 2^420343454417 is an apocalyptic number.

It is an amenable number.

420343454417 is a deficient number, since it is larger than the sum of its proper divisors (1).

420343454417 is an equidigital number, since it uses as much as digits as its factorization.

420343454417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 41.

The spelling of 420343454417 in words is "four hundred twenty billion, three hundred forty-three million, four hundred fifty-four thousand, four hundred seventeen".