42237296681 has 2 divisors, whose sum is σ = 42237296682. Its totient is φ = 42237296680.

The previous prime is 42237296627. The next prime is 42237296693. The reversal of 42237296681 is 18669273224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41306497600 + 930799081 = 203240^2 + 30509^2 .

It is a cyclic number.

It is not a de Polignac number, because 42237296681 - 2³⁰ = 41163554857 is a prime.

It is a super-2 number, since 2×42237296681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42237296281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21118648340 + 21118648341.

It is an arithmetic number, because the mean of its divisors is an integer number (21118648341).

Almost surely, 2^42237296681 is an apocalyptic number.

It is an amenable number.

42237296681 is a deficient number, since it is larger than the sum of its proper divisors (1).

42237296681 is an equidigital number, since it uses as much as digits as its factorization.

42237296681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 50.

The spelling of 42237296681 in words is "forty-two billion, two hundred thirty-seven million, two hundred ninety-six thousand, six hundred eighty-one".