1140181 has 6 divisors (see below), whose sum is σ = 1326390. Its totient is φ = 977256.

The previous prime is 1140163. The next prime is 1140197. The reversal of 1140181 is 1810411.

It can be written as a sum of positive squares in only one way, i.e., 933156 + 207025 = 966^2 + 455^2 .

It is not a de Polignac number, because 1140181 - 2⁹ = 1139669 is a prime.

It is a super-2 number, since 2×1140181² = 2600025425522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140101) 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 5 ways as a sum of consecutive naturals, for example, 11586 + ... + 11683.

It is an arithmetic number, because the mean of its divisors is an integer number (221065).

2^1140181 is an apocalyptic number.

It is an amenable number.

1140181 is a deficient number, since it is larger than the sum of its proper divisors (186209).

1140181 is an equidigital number, since it uses as much as digits as its factorization.

1140181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23283 (or 23276 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 1140181 is about 1067.7925828549. The cubic root of 1140181 is about 104.4699210607.

Adding to 1140181 its reverse (1810411), we get a palindrome (2950592).

The spelling of 1140181 in words is "one million, one hundred forty thousand, one hundred eighty-one".