1143445 has 16 divisors (see below), whose sum is σ = 1464192. Its totient is φ = 855360.

The previous prime is 1143433. The next prime is 1143469. The reversal of 1143445 is 5443411.

It is not a de Polignac number, because 1143445 - 2¹⁷ = 1012373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6934 + ... + 7096.

It is an arithmetic number, because the mean of its divisors is an integer number (91512).

2^1143445 is an apocalyptic number.

It is an amenable number.

1143445 is a deficient number, since it is larger than the sum of its proper divisors (320747).

1143445 is a wasteful number, since it uses less digits than its factorization.

1143445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252.

The product of its digits is 960, while the sum is 22.

The square root of 1143445 is about 1069.3198773052. The cubic root of 1143445 is about 104.5695148839.

Adding to 1143445 its reverse (5443411), we get a palindrome (6586856).

The spelling of 1143445 in words is "one million, one hundred forty-three thousand, four hundred forty-five".