1124605 has 4 divisors (see below), whose sum is σ = 1349532. Its totient is φ = 899680.

The previous prime is 1124603. The next prime is 1124639. The reversal of 1124605 is 5064211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5064211 = 211 ⋅24001.

It can be written as a sum of positive squares in 2 ways, for example, as 527076 + 597529 = 726^2 + 773^2 .

It is not a de Polignac number, because 1124605 - 2¹ = 1124603 is a prime.

It is a Duffinian number.

1124605 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1124603) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 112456 + ... + 112465.

It is an arithmetic number, because the mean of its divisors is an integer number (337383).

2^1124605 is an apocalyptic number.

It is an amenable number.

1124605 is a deficient number, since it is larger than the sum of its proper divisors (224927).

1124605 is an equidigital number, since it uses as much as digits as its factorization.

1124605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224926.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1124605 is about 1060.4739506466. The cubic root of 1124605 is about 103.9920173853.

Adding to 1124605 its reverse (5064211), we get a palindrome (6188816).

The spelling of 1124605 in words is "one million, one hundred twenty-four thousand, six hundred five".