1142213 has 4 divisors (see below), whose sum is σ = 1209420. Its totient is φ = 1075008.

The previous prime is 1142201. The next prime is 1142233. The reversal of 1142213 is 3122411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3122411 = 23 ⋅135757.

It can be written as a sum of positive squares in 2 ways, for example, as 1014049 + 128164 = 1007^2 + 358^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142213 - 2¹² = 1138117 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 (1142233) 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 3 ways as a sum of consecutive naturals, for example, 33578 + ... + 33611.

It is an arithmetic number, because the mean of its divisors is an integer number (302355).

2^1142213 is an apocalyptic number.

It is an amenable number.

1142213 is a deficient number, since it is larger than the sum of its proper divisors (67207).

1142213 is an equidigital number, since it uses as much as digits as its factorization.

1142213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67206.

The product of its digits is 48, while the sum is 14.

The square root of 1142213 is about 1068.7436549519. The cubic root of 1142213 is about 104.5319453931.

Adding to 1142213 its reverse (3122411), we get a palindrome (4264624).

It can be divided in two parts, 11 and 42213, that added together give a palindrome (42224).

The spelling of 1142213 in words is "one million, one hundred forty-two thousand, two hundred thirteen".