4197141521 has 2 divisors, whose sum is σ = 4197141522. Its totient is φ = 4197141520.

The previous prime is 4197141517. The next prime is 4197141523. The reversal of 4197141521 is 1251417914.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2647617025 + 1549524496 = 51455^2 + 39364^2 .

It is a cyclic number.

It is not a de Polignac number, because 4197141521 - 2² = 4197141517 is a prime.

Together with 4197141523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4197141523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2098570760 + 2098570761.

It is an arithmetic number, because the mean of its divisors is an integer number (2098570761).

Almost surely, 2^4197141521 is an apocalyptic number.

It is an amenable number.

4197141521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4197141521 is an equidigital number, since it uses as much as digits as its factorization.

4197141521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 35.

The square root of 4197141521 is about 64785.3495861526. The cubic root of 4197141521 is about 1613.0625350260.

The spelling of 4197141521 in words is "four billion, one hundred ninety-seven million, one hundred forty-one thousand, five hundred twenty-one".