42204261481 has 2 divisors, whose sum is σ = 42204261482. Its totient is φ = 42204261480.

The previous prime is 42204261457. The next prime is 42204261487. The reversal of 42204261481 is 18416240224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24185226256 + 18019035225 = 155516^2 + 134235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42204261481 is a prime.

It is a super-2 number, since 2×42204261481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42204261487) 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, 21102130740 + 21102130741.

It is an arithmetic number, because the mean of its divisors is an integer number (21102130741).

Almost surely, 2^42204261481 is an apocalyptic number.

It is an amenable number.

42204261481 is a deficient number, since it is larger than the sum of its proper divisors (1).

42204261481 is an equidigital number, since it uses as much as digits as its factorization.

42204261481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24576, while the sum is 34.

The spelling of 42204261481 in words is "forty-two billion, two hundred four million, two hundred sixty-one thousand, four hundred eighty-one".