42143423334431 has 4 divisors (see below), whose sum is σ = 42145103250432. Its totient is φ = 42141743418432.

The previous prime is 42143423334377. The next prime is 42143423334437. The reversal of 42143423334431 is 13443332434124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42143423334431 - 2³⁴ = 42126243465247 is a prime.

It is a super-2 number, since 2×42143423334431² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42143423334437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839920370 + ... + 839970543.

It is an arithmetic number, because the mean of its divisors is an integer number (10536275812608).

Almost surely, 2^{42143423334431} is an apocalyptic number.

42143423334431 is a deficient number, since it is larger than the sum of its proper divisors (1679916001).

42143423334431 is a wasteful number, since it uses less digits than its factorization.

42143423334431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679916000.

The product of its digits is 995328, while the sum is 41.

Adding to 42143423334431 its reverse (13443332434124), we get a palindrome (55586755768555).

The spelling of 42143423334431 in words is "forty-two trillion, one hundred forty-three billion, four hundred twenty-three million, three hundred thirty-four thousand, four hundred thirty-one".