42119885261 has 2 divisors, whose sum is σ = 42119885262. Its totient is φ = 42119885260.

The previous prime is 42119885221. The next prime is 42119885263. The reversal of 42119885261 is 16258891124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38214385225 + 3905500036 = 195485^2 + 62494^2 .

It is a cyclic number.

It is not a de Polignac number, because 42119885261 - 2³⁴ = 24940016077 is a prime.

Together with 42119885263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42119885263) 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, 21059942630 + 21059942631.

It is an arithmetic number, because the mean of its divisors is an integer number (21059942631).

Almost surely, 2^42119885261 is an apocalyptic number.

It is an amenable number.

42119885261 is a deficient number, since it is larger than the sum of its proper divisors (1).

42119885261 is an equidigital number, since it uses as much as digits as its factorization.

42119885261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 47.

The spelling of 42119885261 in words is "forty-two billion, one hundred nineteen million, eight hundred eighty-five thousand, two hundred sixty-one".