1140047 has 4 divisors (see below), whose sum is σ = 1156176. Its totient is φ = 1123920.

The previous prime is 1139993. The next prime is 1140091. The reversal of 1140047 is 7400411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7400411 = 23 ⋅321757.

It is a cyclic number.

It is not a de Polignac number, because 1140047 - 2¹² = 1135951 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 (1140847) 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, 7958 + ... + 8099.

It is an arithmetic number, because the mean of its divisors is an integer number (289044).

2^1140047 is an apocalyptic number.

1140047 is a deficient number, since it is larger than the sum of its proper divisors (16129).

1140047 is an equidigital number, since it uses as much as digits as its factorization.

1140047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16128.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 1140047 is about 1067.7298347429. The cubic root of 1140047 is about 104.4658282843.

Adding to 1140047 its reverse (7400411), we get a palindrome (8540458).

The spelling of 1140047 in words is "one million, one hundred forty thousand, forty-seven".