42360881 has 2 divisors, whose sum is σ = 42360882. Its totient is φ = 42360880.

The previous prime is 42360869. The next prime is 42360883. The reversal of 42360881 is 18806324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37699600 + 4661281 = 6140^2 + 2159^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42360881 is a prime.

It is a super-2 number, since 2×42360881² = 3588888478192322, which contains 22 as substring.

Together with 42360883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42360883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21180440 + 21180441.

It is an arithmetic number, because the mean of its divisors is an integer number (21180441).

Almost surely, 2^42360881 is an apocalyptic number.

It is an amenable number.

42360881 is a deficient number, since it is larger than the sum of its proper divisors (1).

42360881 is an equidigital number, since it uses as much as digits as its factorization.

42360881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 42360881 is about 6508.5237189396. The cubic root of 42360881 is about 348.5954074746.

The spelling of 42360881 in words is "forty-two million, three hundred sixty thousand, eight hundred eighty-one".