42431340443 has 2 divisors, whose sum is σ = 42431340444. Its totient is φ = 42431340442.

The previous prime is 42431340433. The next prime is 42431340473. The reversal of 42431340443 is 34404313424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42431340443 - 2¹² = 42431336347 is a prime.

It is not a weakly prime, because it can be changed into another prime (42431340433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21215670221 + 21215670222.

It is an arithmetic number, because the mean of its divisors is an integer number (21215670222).

Almost surely, 2^42431340443 is an apocalyptic number.

42431340443 is a deficient number, since it is larger than the sum of its proper divisors (1).

42431340443 is an equidigital number, since it uses as much as digits as its factorization.

42431340443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 42431340443 its reverse (34404313424), we get a palindrome (76835653867).

The spelling of 42431340443 in words is "forty-two billion, four hundred thirty-one million, three hundred forty thousand, four hundred forty-three".