1140229 has 4 divisors (see below), whose sum is σ = 1171084. Its totient is φ = 1109376.

The previous prime is 1140203. The next prime is 1140233. The reversal of 1140229 is 9220411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9220411 = 73 ⋅126307.

It can be written as a sum of positive squares in 2 ways, for example, as 497025 + 643204 = 705^2 + 802^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140229 - 2⁵ = 1140197 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 (1140239) 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, 15372 + ... + 15445.

It is an arithmetic number, because the mean of its divisors is an integer number (292771).

2^1140229 is an apocalyptic number.

It is an amenable number.

1140229 is a deficient number, since it is larger than the sum of its proper divisors (30855).

1140229 is an equidigital number, since it uses as much as digits as its factorization.

1140229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30854.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1140229 is about 1067.8150588936. The cubic root of 1140229 is about 104.4713870519.

It can be divided in two parts, 1140 and 229, that added together give a square (1369 = 37²).

The spelling of 1140229 in words is "one million, one hundred forty thousand, two hundred twenty-nine".