42997442291 has 2 divisors, whose sum is σ = 42997442292. Its totient is φ = 42997442290.

The previous prime is 42997442269. The next prime is 42997442303. The reversal of 42997442291 is 19224479924.

42997442291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42997442291 is a prime.

It is not a weakly prime, because it can be changed into another prime (42997442261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21498721145 + 21498721146.

It is an arithmetic number, because the mean of its divisors is an integer number (21498721146).

Almost surely, 2^42997442291 is an apocalyptic number.

42997442291 is a deficient number, since it is larger than the sum of its proper divisors (1).

42997442291 is an equidigital number, since it uses as much as digits as its factorization.

42997442291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 53.

The spelling of 42997442291 in words is "forty-two billion, nine hundred ninety-seven million, four hundred forty-two thousand, two hundred ninety-one".