42534120043 has 4 divisors (see below), whose sum is σ = 44772757960. Its totient is φ = 40295482128.

The previous prime is 42534120017. The next prime is 42534120049. The reversal of 42534120043 is 34002143524.

It is a happy number.

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 42534120043 - 2⁹ = 42534119531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42534119993 and 42534120020.

It is not an unprimeable number, because it can be changed into a prime (42534120049) 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, 1119318930 + ... + 1119318967.

It is an arithmetic number, because the mean of its divisors is an integer number (11193189490).

Almost surely, 2^42534120043 is an apocalyptic number.

42534120043 is a deficient number, since it is larger than the sum of its proper divisors (2238637917).

42534120043 is a wasteful number, since it uses less digits than its factorization.

42534120043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238637916.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 42534120043 its reverse (34002143524), we get a palindrome (76536263567).

The spelling of 42534120043 in words is "forty-two billion, five hundred thirty-four million, one hundred twenty thousand, forty-three".