42040305043 has 4 divisors (see below), whose sum is σ = 45862150968. Its totient is φ = 38218459120.

The previous prime is 42040305011. The next prime is 42040305049. The reversal of 42040305043 is 34050304024.

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 42040305043 - 2⁵ = 42040305011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42040304999 and 42040305017.

It is not an unprimeable number, because it can be changed into a prime (42040305049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1910922946 + ... + 1910922967.

It is an arithmetic number, because the mean of its divisors is an integer number (11465537742).

Almost surely, 2^42040305043 is an apocalyptic number.

42040305043 is a deficient number, since it is larger than the sum of its proper divisors (3821845925).

42040305043 is a wasteful number, since it uses less digits than its factorization.

42040305043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3821845924.

The product of its (nonzero) digits is 5760, while the sum is 25.

Adding to 42040305043 its reverse (34050304024), we get a palindrome (76090609067).

The spelling of 42040305043 in words is "forty-two billion, forty million, three hundred five thousand, forty-three".