40423434343 has 32 divisors (see below), whose sum is σ = 45353613312. Its totient is φ = 35845708800.

The previous prime is 40423434269. The next prime is 40423434349. The reversal of 40423434343 is 34343432404.

40423434343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40423434343 - 2²⁵ = 40389879911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40423434299 and 40423434308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40423434349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12163080 + ... + 12166402.

It is an arithmetic number, because the mean of its divisors is an integer number (1417300416).

Almost surely, 2^40423434343 is an apocalyptic number.

40423434343 is a deficient number, since it is larger than the sum of its proper divisors (4930178969).

40423434343 is a wasteful number, since it uses less digits than its factorization.

40423434343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3975.

The product of its (nonzero) digits is 165888, while the sum is 34.

Adding to 40423434343 its reverse (34343432404), we get a palindrome (74766866747).

The spelling of 40423434343 in words is "forty billion, four hundred twenty-three million, four hundred thirty-four thousand, three hundred forty-three".