42431143 has 2 divisors, whose sum is σ = 42431144. Its totient is φ = 42431142.

The previous prime is 42431141. The next prime is 42431197. The reversal of 42431143 is 34113424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42431143 - 2¹ = 42431141 is a prime.

Together with 42431141, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42431141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21215571 + 21215572.

It is an arithmetic number, because the mean of its divisors is an integer number (21215572).

Almost surely, 2^42431143 is an apocalyptic number.

42431143 is a deficient number, since it is larger than the sum of its proper divisors (1).

42431143 is an equidigital number, since it uses as much as digits as its factorization.

42431143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 22.

The square root of 42431143 is about 6513.9191735851. The cubic root of 42431143 is about 348.7880339467.

Adding to 42431143 its reverse (34113424), we get a palindrome (76544567).

The spelling of 42431143 in words is "forty-two million, four hundred thirty-one thousand, one hundred forty-three".