421370771172341 has 2 divisors, whose sum is σ = 421370771172342. Its totient is φ = 421370771172340.

The previous prime is 421370771172319. The next prime is 421370771172397. The reversal of 421370771172341 is 143271177073124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369464293874116 + 51906477298225 = 19221454^2 + 7204615^2 .

It is a cyclic number.

It is not a de Polignac number, because 421370771172341 - 2²² = 421370766978037 is a prime.

It is a super-2 number, since 2×421370771172341² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 421370771172341.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421370771112341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210685385586170 + 210685385586171.

It is an arithmetic number, because the mean of its divisors is an integer number (210685385586171).

Almost surely, 2^{421370771172341} is an apocalyptic number.

It is an amenable number.

421370771172341 is a deficient number, since it is larger than the sum of its proper divisors (1).

421370771172341 is an equidigital number, since it uses as much as digits as its factorization.

421370771172341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1382976, while the sum is 50.

The spelling of 421370771172341 in words is "four hundred twenty-one trillion, three hundred seventy billion, seven hundred seventy-one million, one hundred seventy-two thousand, three hundred forty-one".