4140023 has 4 divisors (see below), whose sum is σ = 4320048. Its totient is φ = 3960000.

The previous prime is 4140001. The next prime is 4140029. The reversal of 4140023 is 3200414.

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 4140023 - 2⁸ = 4139767 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 (4140029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89978 + ... + 90023.

It is an arithmetic number, because the mean of its divisors is an integer number (1080012).

Almost surely, 2^4140023 is an apocalyptic number.

4140023 is a deficient number, since it is larger than the sum of its proper divisors (180025).

4140023 is a wasteful number, since it uses less digits than its factorization.

4140023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180024.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 4140023 is about 2034.7046468714. The cubic root of 4140023 is about 160.5711747161.

Adding to 4140023 its reverse (3200414), we get a palindrome (7340437).

The spelling of 4140023 in words is "four million, one hundred forty thousand, twenty-three".