42232202381 has 2 divisors, whose sum is σ = 42232202382. Its totient is φ = 42232202380.

The previous prime is 42232202377. The next prime is 42232202431. The reversal of 42232202381 is 18320223224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37043161156 + 5189041225 = 192466^2 + 72035^2 .

It is a cyclic number.

It is not a de Polignac number, because 42232202381 - 2² = 42232202377 is a prime.

It is a super-2 number, since 2×42232202381² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42232202081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21116101190 + 21116101191.

It is an arithmetic number, because the mean of its divisors is an integer number (21116101191).

Almost surely, 2^42232202381 is an apocalyptic number.

It is an amenable number.

42232202381 is a deficient number, since it is larger than the sum of its proper divisors (1).

42232202381 is an equidigital number, since it uses as much as digits as its factorization.

42232202381 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 29.

The spelling of 42232202381 in words is "forty-two billion, two hundred thirty-two million, two hundred two thousand, three hundred eighty-one".