42964297391 has 2 divisors, whose sum is σ = 42964297392. Its totient is φ = 42964297390.

The previous prime is 42964297339. The next prime is 42964297417. The reversal of 42964297391 is 19379246924.

42964297391 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-42964297391 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42964296391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21482148695 + 21482148696.

It is an arithmetic number, because the mean of its divisors is an integer number (21482148696).

Almost surely, 2^42964297391 is an apocalyptic number.

42964297391 is a deficient number, since it is larger than the sum of its proper divisors (1).

42964297391 is an equidigital number, since it uses as much as digits as its factorization.

42964297391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 56.

The spelling of 42964297391 in words is "forty-two billion, nine hundred sixty-four million, two hundred ninety-seven thousand, three hundred ninety-one".