1140154423 has 4 divisors (see below), whose sum is σ = 1156213008. Its totient is φ = 1124095840.

The previous prime is 1140154403. The next prime is 1140154429. The reversal of 1140154423 is 3244510411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1140154423 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 (1140154429) 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, 8029186 + ... + 8029327.

It is an arithmetic number, because the mean of its divisors is an integer number (289053252).

Almost surely, 2^1140154423 is an apocalyptic number.

1140154423 is a deficient number, since it is larger than the sum of its proper divisors (16058585).

1140154423 is an equidigital number, since it uses as much as digits as its factorization.

1140154423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16058584.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1140154423 is about 33766.1727621002. The cubic root of 1140154423 is about 1044.6910934205.

Adding to 1140154423 its reverse (3244510411), we get a palindrome (4384664834).

The spelling of 1140154423 in words is "one billion, one hundred forty million, one hundred fifty-four thousand, four hundred twenty-three".