40342423 has 8 divisors (see below), whose sum is σ = 44055936. Its totient is φ = 36636600.

The previous prime is 40342417. The next prime is 40342427. The reversal of 40342423 is 32424304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40342423 - 2⁹ = 40341911 is a prime.

It is a super-2 number, since 2×40342423² = 3255022187021858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40342394 and 40342403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40342427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19140 + ... + 21142.

It is an arithmetic number, because the mean of its divisors is an integer number (5506992).

Almost surely, 2^40342423 is an apocalyptic number.

40342423 is a deficient number, since it is larger than the sum of its proper divisors (3713513).

40342423 is a wasteful number, since it uses less digits than its factorization.

40342423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3845.

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

The square root of 40342423 is about 6351.5685464301. The cubic root of 40342423 is about 342.9683095950.

Adding to 40342423 its reverse (32424304), we get a palindrome (72766727).

The spelling of 40342423 in words is "forty million, three hundred forty-two thousand, four hundred twenty-three".