40743023 has 4 divisors (see below), whose sum is σ = 40765368. Its totient is φ = 40720680.

The previous prime is 40743013. The next prime is 40743029. The reversal of 40743023 is 32034704.

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 40743023 - 2¹⁴ = 40726639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40743023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40743029) 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, 8168 + ... + 12173.

It is an arithmetic number, because the mean of its divisors is an integer number (10191342).

Almost surely, 2^40743023 is an apocalyptic number.

40743023 is a deficient number, since it is larger than the sum of its proper divisors (22345).

40743023 is a wasteful number, since it uses less digits than its factorization.

40743023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22344.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 40743023 is about 6383.0261631925. The cubic root of 40743023 is about 344.0997969648.

Adding to 40743023 its reverse (32034704), we get a palindrome (72777727).

The spelling of 40743023 in words is "forty million, seven hundred forty-three thousand, twenty-three".