2140440423 has 8 divisors (see below), whose sum is σ = 3113367936. Its totient is φ = 1297236600.

The previous prime is 2140440391. The next prime is 2140440433. The reversal of 2140440423 is 3240440412.

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 2140440423 - 2⁵ = 2140440391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2140440393 and 2140440402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140440433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32430883 + ... + 32430948.

It is an arithmetic number, because the mean of its divisors is an integer number (389170992).

Almost surely, 2^2140440423 is an apocalyptic number.

2140440423 is a deficient number, since it is larger than the sum of its proper divisors (972927513).

2140440423 is a wasteful number, since it uses less digits than its factorization.

2140440423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64861845.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 2140440423 is about 46264.8940666679. The cubic root of 2140440423 is about 1288.7471406758.

Adding to 2140440423 its reverse (3240440412), we get a palindrome (5380880835).

The spelling of 2140440423 in words is "two billion, one hundred forty million, four hundred forty thousand, four hundred twenty-three".