1140087 has 32 divisors (see below), whose sum is σ = 1806336. Its totient is φ = 633600.

The previous prime is 1139993. The next prime is 1140091. The reversal of 1140087 is 7800411.

It is not a de Polignac number, because 1140087 - 2⁷ = 1139959 is a prime.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27787 + ... + 27827.

It is an arithmetic number, because the mean of its divisors is an integer number (56448).

2^1140087 is an apocalyptic number.

1140087 is a deficient number, since it is larger than the sum of its proper divisors (666249).

1140087 is a wasteful number, since it uses less digits than its factorization.

1140087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1140087 is about 1067.7485659087. The cubic root of 1140087 is about 104.4670500422.

Adding to 1140087 its reverse (7800411), we get a palindrome (8940498).

The spelling of 1140087 in words is "one million, one hundred forty thousand, eighty-seven".