1040340423 has 16 divisors (see below), whose sum is σ = 1422364160. Its totient is φ = 676152576.

The previous prime is 1040340419. The next prime is 1040340443. The reversal of 1040340423 is 3240430401.

1040340423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1040340423 - 2² = 1040340419 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 1040340423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040340443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7183 + ... + 46176.

It is an arithmetic number, because the mean of its divisors is an integer number (88897760).

Almost surely, 2^1040340423 is an apocalyptic number.

1040340423 is a deficient number, since it is larger than the sum of its proper divisors (382023737).

1040340423 is an equidigital number, since it uses as much as digits as its factorization.

1040340423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53526.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1040340423 is about 32254.3085959070. The cubic root of 1040340423 is about 1013.2699375183.

Adding to 1040340423 its reverse (3240430401), we get a palindrome (4280770824).

The spelling of 1040340423 in words is "one billion, forty million, three hundred forty thousand, four hundred twenty-three".