42031430443 has 2 divisors, whose sum is σ = 42031430444. Its totient is φ = 42031430442.

The previous prime is 42031430381. The next prime is 42031430471. The reversal of 42031430443 is 34403413024.

42031430443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (42031430471) can be obtained adding 42031430443 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42031430443 - 2⁹ = 42031429931 is a prime.

It is a super-2 number, since 2×42031430443² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42031430143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21015715221 + 21015715222.

It is an arithmetic number, because the mean of its divisors is an integer number (21015715222).

Almost surely, 2^42031430443 is an apocalyptic number.

42031430443 is a deficient number, since it is larger than the sum of its proper divisors (1).

42031430443 is an equidigital number, since it uses as much as digits as its factorization.

42031430443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 42031430443 its reverse (34403413024), we get a palindrome (76434843467).

The spelling of 42031430443 in words is "forty-two billion, thirty-one million, four hundred thirty thousand, four hundred forty-three".