1140161 has 4 divisors (see below), whose sum is σ = 1243824. Its totient is φ = 1036500.

The previous prime is 1140157. The next prime is 1140163. The reversal of 1140161 is 1610411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1140161 - 2² = 1140157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140163) 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, 51815 + ... + 51836.

It is an arithmetic number, because the mean of its divisors is an integer number (310956).

2^1140161 is an apocalyptic number.

1140161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1140161 is a deficient number, since it is larger than the sum of its proper divisors (103663).

1140161 is a wasteful number, since it uses less digits than its factorization.

1140161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103662.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1140161 is about 1067.7832176992. The cubic root of 1140161 is about 104.4693102189.

Adding to 1140161 its reverse (1610411), we get a palindrome (2750572).

The spelling of 1140161 in words is "one million, one hundred forty thousand, one hundred sixty-one".