1140401023 has 4 divisors (see below), whose sum is σ = 1140762040. Its totient is φ = 1140040008.

The previous prime is 1140400991. The next prime is 1140401027. The reversal of 1140401023 is 3201040411.

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 1140401023 - 2⁵ = 1140400991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1140400988 and 1140401006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140401027) 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 3 ways as a sum of consecutive naturals, for example, 175728 + ... + 182101.

It is an arithmetic number, because the mean of its divisors is an integer number (285190510).

Almost surely, 2^1140401023 is an apocalyptic number.

1140401023 is a deficient number, since it is larger than the sum of its proper divisors (361017).

1140401023 is an equidigital number, since it uses as much as digits as its factorization.

1140401023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361016.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1140401023 is about 33769.8241481948. The cubic root of 1140401023 is about 1044.7664055149.

Adding to 1140401023 its reverse (3201040411), we get a palindrome (4341441434).

The spelling of 1140401023 in words is "one billion, one hundred forty million, four hundred one thousand, twenty-three".