1144642 has 4 divisors (see below), whose sum is σ = 1716966. Its totient is φ = 572320.

The previous prime is 1144621. The next prime is 1144643. The reversal of 1144642 is 2464411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2464411 = 373 ⋅6607.

It can be written as a sum of positive squares in only one way, i.e., 829921 + 314721 = 911^2 + 561^2 .

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 a d-powerful number, because it can be written as 1 + 1 + 4⁴ + 4⁷ + 6⁶ + 4¹⁰ + 2¹⁵ .

It is not an unprimeable number, because it can be changed into a prime (1144643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286159 + ... + 286162.

2^1144642 is an apocalyptic number.

1144642 is a deficient number, since it is larger than the sum of its proper divisors (572324).

1144642 is an equidigital number, since it uses as much as digits as its factorization.

1144642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572323.

The product of its digits is 768, while the sum is 22.

The square root of 1144642 is about 1069.8794324596. The cubic root of 1144642 is about 104.6059912214.

The spelling of 1144642 in words is "one million, one hundred forty-four thousand, six hundred forty-two".