2942721671 has 2 divisors, whose sum is σ = 2942721672. Its totient is φ = 2942721670.

The previous prime is 2942721647. The next prime is 2942721773. The reversal of 2942721671 is 1761272492.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2942721671 is a prime.

It is a super-2 number, since 2×2942721671² = 17319221665946064482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2942721631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1471360835 + 1471360836.

It is an arithmetic number, because the mean of its divisors is an integer number (1471360836).

Almost surely, 2^2942721671 is an apocalyptic number.

2942721671 is a deficient number, since it is larger than the sum of its proper divisors (1).

2942721671 is an equidigital number, since it uses as much as digits as its factorization.

2942721671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 2942721671 is about 54246.8586279427. The cubic root of 2942721671 is about 1433.0116766170.

The spelling of 2942721671 in words is "two billion, nine hundred forty-two million, seven hundred twenty-one thousand, six hundred seventy-one".