43340430442 has 4 divisors (see below), whose sum is σ = 65010645666. Its totient is φ = 21670215220.

The previous prime is 43340430439. The next prime is 43340430457. The reversal of 43340430442 is 24403404334.

43340430442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24403404334 = 2 ⋅12201702167.

It can be written as a sum of positive squares in only one way, i.e., 34811723241 + 8528707201 = 186579^2 + 92351^2 .

It is a Smith number, since the sum of its digits (31) 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, 10835107609 + ... + 10835107612.

Almost surely, 2^43340430442 is an apocalyptic number.

43340430442 is a deficient number, since it is larger than the sum of its proper divisors (21670215224).

43340430442 is a wasteful number, since it uses less digits than its factorization.

43340430442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21670215223.

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 43340430442 its reverse (24403404334), we get a palindrome (67743834776).

The spelling of 43340430442 in words is "forty-three billion, three hundred forty million, four hundred thirty thousand, four hundred forty-two".