1123945 has 8 divisors (see below), whose sum is σ = 1419840. Its totient is φ = 851760.

The previous prime is 1123943. The next prime is 1123951. The reversal of 1123945 is 5493211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1123945 - 2¹ = 1123943 is a prime.

1123945 is a lucky number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1123943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5821 + ... + 6010.

It is an arithmetic number, because the mean of its divisors is an integer number (177480).

2^1123945 is an apocalyptic number.

It is an amenable number.

1123945 is a deficient number, since it is larger than the sum of its proper divisors (295895).

1123945 is a wasteful number, since it uses less digits than its factorization.

1123945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11855.

The product of its digits is 1080, while the sum is 25.

The square root of 1123945 is about 1060.1627233590. The cubic root of 1123945 is about 103.9716700449.

The spelling of 1123945 in words is "one million, one hundred twenty-three thousand, nine hundred forty-five".