42043434431 has 2 divisors, whose sum is σ = 42043434432. Its totient is φ = 42043434430.

The previous prime is 42043434401. The next prime is 42043434437. The reversal of 42043434431 is 13443434024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42043434431 - 2³⁴ = 24863565247 is a prime.

It is a super-2 number, since 2×42043434431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42043434437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21021717215 + 21021717216.

It is an arithmetic number, because the mean of its divisors is an integer number (21021717216).

Almost surely, 2^42043434431 is an apocalyptic number.

42043434431 is a deficient number, since it is larger than the sum of its proper divisors (1).

42043434431 is an equidigital number, since it uses as much as digits as its factorization.

42043434431 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 42043434431 its reverse (13443434024), we get a palindrome (55486868455).

The spelling of 42043434431 in words is "forty-two billion, forty-three million, four hundred thirty-four thousand, four hundred thirty-one".