3927142321 has 2 divisors, whose sum is σ = 3927142322. Its totient is φ = 3927142320.

The previous prime is 3927142301. The next prime is 3927142369. The reversal of 3927142321 is 1232417293.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3910626225 + 16516096 = 62535^2 + 4064^2 .

It is a cyclic number.

It is not a de Polignac number, because 3927142321 - 2⁹ = 3927141809 is a prime.

It is not a weakly prime, because it can be changed into another prime (3927142301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1963571160 + 1963571161.

It is an arithmetic number, because the mean of its divisors is an integer number (1963571161).

Almost surely, 2^3927142321 is an apocalyptic number.

It is an amenable number.

3927142321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3927142321 is an equidigital number, since it uses as much as digits as its factorization.

3927142321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 3927142321 is about 62666.9156812428. The cubic root of 3927142321 is about 1577.7040734982.

The spelling of 3927142321 in words is "three billion, nine hundred twenty-seven million, one hundred forty-two thousand, three hundred twenty-one".