1140256123 has 4 divisors (see below), whose sum is σ = 1140358968. Its totient is φ = 1140153280.

The previous prime is 1140256109. The next prime is 1140256129. The reversal of 1140256123 is 3216520411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1140256123 - 2²¹ = 1138158971 is a prime.

It is a super-2 number, since 2×1140256123² = 2600368052077982258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140256129) 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, 32461 + ... + 57742.

It is an arithmetic number, because the mean of its divisors is an integer number (285089742).

Almost surely, 2^1140256123 is an apocalyptic number.

1140256123 is a deficient number, since it is larger than the sum of its proper divisors (102845).

1140256123 is an equidigital number, since it uses as much as digits as its factorization.

1140256123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102844.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1140256123 is about 33767.6786735482. The cubic root of 1140256123 is about 1044.7221541035.

Adding to 1140256123 its reverse (3216520411), we get a palindrome (4356776534).

The spelling of 1140256123 in words is "one billion, one hundred forty million, two hundred fifty-six thousand, one hundred twenty-three".