1123261 has 4 divisors (see below), whose sum is σ = 1182400. Its totient is φ = 1064124.

The previous prime is 1123247. The next prime is 1123267. The reversal of 1123261 is 1623211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1623211 = 17 ⋅95483.

It is a cyclic number.

It is not a de Polignac number, because 1123261 - 2⁹ = 1122749 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123267) 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, 29541 + ... + 29578.

It is an arithmetic number, because the mean of its divisors is an integer number (295600).

2^1123261 is an apocalyptic number.

It is an amenable number.

1123261 is a deficient number, since it is larger than the sum of its proper divisors (59139).

1123261 is an equidigital number, since it uses as much as digits as its factorization.

1123261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59138.

The product of its digits is 72, while the sum is 16.

The square root of 1123261 is about 1059.8400822766. The cubic root of 1123261 is about 103.9505743941.

Adding to 1123261 its reverse (1623211), we get a palindrome (2746472).

The spelling of 1123261 in words is "one million, one hundred twenty-three thousand, two hundred sixty-one".