42242953691 has 2 divisors, whose sum is σ = 42242953692. Its totient is φ = 42242953690.

The previous prime is 42242953639. The next prime is 42242953717. The reversal of 42242953691 is 19635924224.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42242953691 is a prime.

It is a super-3 number, since 3×42242953691³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (42242955691) 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, 21121476845 + 21121476846.

It is an arithmetic number, because the mean of its divisors is an integer number (21121476846).

Almost surely, 2^42242953691 is an apocalyptic number.

42242953691 is a deficient number, since it is larger than the sum of its proper divisors (1).

42242953691 is an equidigital number, since it uses as much as digits as its factorization.

42242953691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 47.

The spelling of 42242953691 in words is "forty-two billion, two hundred forty-two million, nine hundred fifty-three thousand, six hundred ninety-one".