40345023 has 8 divisors (see below), whose sum is σ = 53824048. Its totient is φ = 26881344.

The previous prime is 40345021. The next prime is 40345057. The reversal of 40345023 is 32054304.

It is a happy number.

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

It is not a de Polignac number, because 40345023 - 2¹ = 40345021 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 (40345021) 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, 5661 + ... + 10617.

It is an arithmetic number, because the mean of its divisors is an integer number (6728006).

Almost surely, 2^40345023 is an apocalyptic number.

40345023 is a deficient number, since it is larger than the sum of its proper divisors (13479025).

40345023 is a wasteful number, since it uses less digits than its factorization.

40345023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7673.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 40345023 is about 6351.7732169844. The cubic root of 40345023 is about 342.9756773432.

Adding to 40345023 its reverse (32054304), we get a palindrome (72399327).

The spelling of 40345023 in words is "forty million, three hundred forty-five thousand, twenty-three".