40342343 has 4 divisors (see below), whose sum is σ = 42715440. Its totient is φ = 37969248.

The previous prime is 40342331. The next prime is 40342349. The reversal of 40342343 is 34324304.

It is a happy number.

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 40342343 - 2¹⁸ = 40080199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40342349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186523 + ... + 1186556.

It is an arithmetic number, because the mean of its divisors is an integer number (10678860).

Almost surely, 2^40342343 is an apocalyptic number.

40342343 is a deficient number, since it is larger than the sum of its proper divisors (2373097).

40342343 is a wasteful number, since it uses less digits than its factorization.

40342343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373096.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 40342343 is about 6351.5622487700. The cubic root of 40342343 is about 342.9680828900.

Adding to 40342343 its reverse (34324304), we get a palindrome (74666647).

The spelling of 40342343 in words is "forty million, three hundred forty-two thousand, three hundred forty-three".