43032400042 has 4 divisors (see below), whose sum is σ = 64548600066. Its totient is φ = 21516200020.

The previous prime is 43032400039. The next prime is 43032400079. The reversal of 43032400042 is 24000423034.

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

It can be written as a sum of positive squares in only one way, i.e., 41200474441 + 1831925601 = 202979^2 + 42801^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 43032399986 and 43032400022.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10758100009 + ... + 10758100012.

Almost surely, 2^43032400042 is an apocalyptic number.

43032400042 is a deficient number, since it is larger than the sum of its proper divisors (21516200024).

43032400042 is a wasteful number, since it uses less digits than its factorization.

43032400042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21516200023.

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 43032400042 its reverse (24000423034), we get a palindrome (67032823076).

The spelling of 43032400042 in words is "forty-three billion, thirty-two million, four hundred thousand, forty-two".