1124645 has 4 divisors (see below), whose sum is σ = 1349580. Its totient is φ = 899712.

The previous prime is 1124639. The next prime is 1124647. The reversal of 1124645 is 5464211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 494209 + 630436 = 703^2 + 794^2 .

It is a cyclic number.

It is not a de Polignac number, because 1124645 - 2⁶ = 1124581 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1124645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1124647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112460 + ... + 112469.

It is an arithmetic number, because the mean of its divisors is an integer number (337395).

2^1124645 is an apocalyptic number.

It is an amenable number.

1124645 is a deficient number, since it is larger than the sum of its proper divisors (224935).

1124645 is an equidigital number, since it uses as much as digits as its factorization.

1124645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224934.

The product of its digits is 960, while the sum is 23.

The square root of 1124645 is about 1060.4928099709. The cubic root of 1124645 is about 103.9932503016.

Adding to 1124645 its reverse (5464211), we get a palindrome (6588856).

The spelling of 1124645 in words is "one million, one hundred twenty-four thousand, six hundred forty-five".