2240423 has 4 divisors (see below), whose sum is σ = 2358360. Its totient is φ = 2122488.

The previous prime is 2240389. The next prime is 2240431. The reversal of 2240423 is 3240422.

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 2240423 - 2¹² = 2236327 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 (2240023) 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, 58940 + ... + 58977.

It is an arithmetic number, because the mean of its divisors is an integer number (589590).

2^2240423 is an apocalyptic number.

2240423 is a deficient number, since it is larger than the sum of its proper divisors (117937).

2240423 is a wasteful number, since it uses less digits than its factorization.

2240423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117936.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 2240423 is about 1496.8042624204. The cubic root of 2240423 is about 130.8508879668.

Adding to 2240423 its reverse (3240422), we get a palindrome (5480845).

Subtracting 2240423 from its reverse (3240422), we obtain a palindrome (999999).

The spelling of 2240423 in words is "two million, two hundred forty thousand, four hundred twenty-three".