1140401111 has 4 divisors (see below), whose sum is σ = 1189983792. Its totient is φ = 1090818432.

The previous prime is 1140401107. The next prime is 1140401113. The reversal of 1140401111 is 1111040411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1111040411 = 13 ⋅85464647.

It is a cyclic number.

It is not a de Polignac number, because 1140401111 - 2² = 1140401107 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 (1140401113) 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, 24791306 + ... + 24791351.

It is an arithmetic number, because the mean of its divisors is an integer number (297495948).

Almost surely, 2^1140401111 is an apocalyptic number.

1140401111 is a deficient number, since it is larger than the sum of its proper divisors (49582681).

1140401111 is an equidigital number, since it uses as much as digits as its factorization.

1140401111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49582680.

The product of its (nonzero) digits is 16, while the sum is 14.

The square root of 1140401111 is about 33769.8254511331. The cubic root of 1140401111 is about 1044.7664323883.

Adding to 1140401111 its reverse (1111040411), we get a palindrome (2251441522).

The spelling of 1140401111 in words is "one billion, one hundred forty million, four hundred one thousand, one hundred eleven".