1140040423 has 2 divisors, whose sum is σ = 1140040424. Its totient is φ = 1140040422.

The previous prime is 1140040409. The next prime is 1140040453. The reversal of 1140040423 is 3240400411.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1140040423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1140040423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140040403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570020211 + 570020212.

It is an arithmetic number, because the mean of its divisors is an integer number (570020212).

Almost surely, 2^1140040423 is an apocalyptic number.

1140040423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140040423 is an equidigital number, since it uses as much as digits as its factorization.

1140040423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1140040423 is about 33764.4846399290. The cubic root of 1140040423 is about 1044.6562739400.

Adding to 1140040423 its reverse (3240400411), we get a palindrome (4380440834).

The spelling of 1140040423 in words is "one billion, one hundred forty million, forty thousand, four hundred twenty-three".