42133442231 has 2 divisors, whose sum is σ = 42133442232. Its totient is φ = 42133442230.

The previous prime is 42133442203. The next prime is 42133442237. The reversal of 42133442231 is 13224433124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42133442231 is a prime.

It is a super-2 number, since 2×42133442231² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 42133442194 and 42133442203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42133442237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21066721115 + 21066721116.

It is an arithmetic number, because the mean of its divisors is an integer number (21066721116).

Almost surely, 2^42133442231 is an apocalyptic number.

42133442231 is a deficient number, since it is larger than the sum of its proper divisors (1).

42133442231 is an equidigital number, since it uses as much as digits as its factorization.

42133442231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 29.

Adding to 42133442231 its reverse (13224433124), we get a palindrome (55357875355).

The spelling of 42133442231 in words is "forty-two billion, one hundred thirty-three million, four hundred forty-two thousand, two hundred thirty-one".