43400041042 has 4 divisors (see below), whose sum is σ = 65100061566. Its totient is φ = 21700020520.

The previous prime is 43400041039. The next prime is 43400041121. The reversal of 43400041042 is 24014000434.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24014000434 = 2 ⋅12007000217.

It can be written as a sum of positive squares in only one way, i.e., 31854753441 + 11545287601 = 178479^2 + 107449^2 .

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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10850010259 + ... + 10850010262.

Almost surely, 2^43400041042 is an apocalyptic number.

43400041042 is a deficient number, since it is larger than the sum of its proper divisors (21700020524).

43400041042 is a wasteful number, since it uses less digits than its factorization.

43400041042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21700020523.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 43400041042 its reverse (24014000434), we get a palindrome (67414041476).

The spelling of 43400041042 in words is "forty-three billion, four hundred million, forty-one thousand, forty-two".