42431411423281 has 2 divisors, whose sum is σ = 42431411423282. Its totient is φ = 42431411423280.

The previous prime is 42431411423257. The next prime is 42431411423369. The reversal of 42431411423281 is 18232411413424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25366382615025 + 17065028808256 = 5036505^2 + 4130984^2 .

It is a cyclic number.

It is not a de Polignac number, because 42431411423281 - 2⁷ = 42431411423153 is a prime.

It is a super-2 number, since 2×42431411423281² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42431411423081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21215705711640 + 21215705711641.

It is an arithmetic number, because the mean of its divisors is an integer number (21215705711641).

Almost surely, 2^{42431411423281} is an apocalyptic number.

It is an amenable number.

42431411423281 is a deficient number, since it is larger than the sum of its proper divisors (1).

42431411423281 is an equidigital number, since it uses as much as digits as its factorization.

42431411423281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 147456, while the sum is 40.

The spelling of 42431411423281 in words is "forty-two trillion, four hundred thirty-one billion, four hundred eleven million, four hundred twenty-three thousand, two hundred eighty-one".