2140423 has 4 divisors (see below), whose sum is σ = 2145528. Its totient is φ = 2135320.

The previous prime is 2140421. The next prime is 2140441. The reversal of 2140423 is 3240412.

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 2140423 - 2¹ = 2140421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2140397 and 2140406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140421) 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, 1861 + ... + 2782.

It is an arithmetic number, because the mean of its divisors is an integer number (536382).

2^2140423 is an apocalyptic number.

2140423 is a deficient number, since it is larger than the sum of its proper divisors (5105).

2140423 is an equidigital number, since it uses as much as digits as its factorization.

2140423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5104.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2140423 is about 1463.0184551126. The cubic root of 2140423 is about 128.8743643903.

Adding to 2140423 its reverse (3240412), we get a palindrome (5380835).

The spelling of 2140423 in words is "two million, one hundred forty thousand, four hundred twenty-three".