42431340433 has 2 divisors, whose sum is σ = 42431340434. Its totient is φ = 42431340432.

The previous prime is 42431340431. The next prime is 42431340443. The reversal of 42431340433 is 33404313424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30016255504 + 12415084929 = 173252^2 + 111423^2 .

It is a cyclic number.

It is not a de Polignac number, because 42431340433 - 2¹ = 42431340431 is a prime.

It is a super-2 number, since 2×42431340433² (a number of 22 digits) contains 22 as substring.

Together with 42431340431, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 42431340395 and 42431340404.

It is not a weakly prime, because it can be changed into another prime (42431340431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21215670216 + 21215670217.

It is an arithmetic number, because the mean of its divisors is an integer number (21215670217).

Almost surely, 2^42431340433 is an apocalyptic number.

It is an amenable number.

42431340433 is a deficient number, since it is larger than the sum of its proper divisors (1).

42431340433 is an equidigital number, since it uses as much as digits as its factorization.

42431340433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 42431340433 its reverse (33404313424), we get a palindrome (75835653857).

The spelling of 42431340433 in words is "forty-two billion, four hundred thirty-one million, three hundred forty thousand, four hundred thirty-three".