1143722 has 4 divisors (see below), whose sum is σ = 1715586. Its totient is φ = 571860.

The previous prime is 1143719. The next prime is 1143749. The reversal of 1143722 is 2273411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2273411 = 7 ⋅324773.

It can be written as a sum of positive squares in only one way, i.e., 1142761 + 961 = 1069^2 + 31^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1143694 and 1143703.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 285929 + ... + 285932.

2^1143722 is an apocalyptic number.

1143722 is a deficient number, since it is larger than the sum of its proper divisors (571864).

1143722 is an equidigital number, since it uses as much as digits as its factorization.

1143722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571863.

The product of its digits is 336, while the sum is 20.

The square root of 1143722 is about 1069.4493910420. The cubic root of 1143722 is about 104.5779582041.

The spelling of 1143722 in words is "one million, one hundred forty-three thousand, seven hundred twenty-two".