42266139137 has 2 divisors, whose sum is σ = 42266139138. Its totient is φ = 42266139136.

The previous prime is 42266139079. The next prime is 42266139191. The reversal of 42266139137 is 73193166224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41397599296 + 868539841 = 203464^2 + 29471^2 .

It is a cyclic number.

It is not a de Polignac number, because 42266139137 - 2¹⁸ = 42265876993 is a prime.

It is not a weakly prime, because it can be changed into another prime (42266136137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21133069568 + 21133069569.

It is an arithmetic number, because the mean of its divisors is an integer number (21133069569).

Almost surely, 2^42266139137 is an apocalyptic number.

It is an amenable number.

42266139137 is a deficient number, since it is larger than the sum of its proper divisors (1).

42266139137 is an equidigital number, since it uses as much as digits as its factorization.

42266139137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 44.

The spelling of 42266139137 in words is "forty-two billion, two hundred sixty-six million, one hundred thirty-nine thousand, one hundred thirty-seven".