1142266 has 4 divisors (see below), whose sum is σ = 1713402. Its totient is φ = 571132.

The previous prime is 1142263. The next prime is 1142269. The reversal of 1142266 is 6622411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6622411 = 29 ⋅228359.

It is an interprime number because it is at equal distance from previous prime (1142263) and next prime (1142269).

It can be written as a sum of positive squares in only one way, i.e., 1113025 + 29241 = 1055^2 + 171^2 .

It is a super-2 number, since 2×1142266² = 2609543229512, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1142263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285565 + ... + 285568.

2^1142266 is an apocalyptic number.

1142266 is a deficient number, since it is larger than the sum of its proper divisors (571136).

1142266 is an equidigital number, since it uses as much as digits as its factorization.

1142266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571135.

The product of its digits is 576, while the sum is 22.

The square root of 1142266 is about 1068.7684501331. The cubic root of 1142266 is about 104.5335621691.

Adding to 1142266 its reverse (6622411), we get a palindrome (7764677).

The spelling of 1142266 in words is "one million, one hundred forty-two thousand, two hundred sixty-six".