1140523 has 4 divisors (see below), whose sum is σ = 1155040. Its totient is φ = 1126008.

The previous prime is 1140493. The next prime is 1140533. The reversal of 1140523 is 3250411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3250411 = 1097 ⋅2963.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1140523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1140497 and 1140506.

It is not an unprimeable number, because it can be changed into a prime (1140533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7140 + ... + 7297.

It is an arithmetic number, because the mean of its divisors is an integer number (288760).

2^1140523 is an apocalyptic number.

1140523 is a deficient number, since it is larger than the sum of its proper divisors (14517).

1140523 is an equidigital number, since it uses as much as digits as its factorization.

1140523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14516.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1140523 is about 1067.9527143090. The cubic root of 1140523 is about 104.4803653502.

Adding to 1140523 its reverse (3250411), we get a palindrome (4390934).

The spelling of 1140523 in words is "one million, one hundred forty thousand, five hundred twenty-three".