1261224 has 32 divisors (see below), whose sum is σ = 3504000. Its totient is φ = 420336.

The previous prime is 1261223. The next prime is 1261259. The reversal of 1261224 is 4221621.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1261197 and 1261206.

It is not an unprimeable number, because it can be changed into a prime (1261223) 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 7 ways as a sum of consecutive naturals, for example, 2704 + ... + 3135.

It is an arithmetic number, because the mean of its divisors is an integer number (109500).

2^1261224 is an apocalyptic number.

It is an amenable number.

1261224 is an abundant number, since it is smaller than the sum of its proper divisors (2242776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1261224 is a wasteful number, since it uses less digits than its factorization.

1261224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5854 (or 5844 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 1261224 is about 1123.0422966211. The cubic root of 1261224 is about 108.0431926002.

Adding to 1261224 its reverse (4221621), we get a palindrome (5482845).

It can be divided in two parts, 1261 and 224, that added together give a triangular number (1485 = T₅₄).

The spelling of 1261224 in words is "one million, two hundred sixty-one thousand, two hundred twenty-four".