1224261 has 8 divisors (see below), whose sum is σ = 1813760. Its totient is φ = 816156.

The previous prime is 1224259. The next prime is 1224269. The reversal of 1224261 is 1624221.

It is not a de Polignac number, because 1224261 - 2¹ = 1224259 is a prime.

It is a super-2 number, since 2×1224261² = 2997629992242, which contains 22 as substring.

It is a Duffinian number.

1224261 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224269) 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, 22645 + ... + 22698.

It is an arithmetic number, because the mean of its divisors is an integer number (226720).

2^1224261 is an apocalyptic number.

It is an amenable number.

1224261 is a deficient number, since it is larger than the sum of its proper divisors (589499).

1224261 is an equidigital number, since it uses as much as digits as its factorization.

1224261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45352 (or 45346 counting only the distinct ones).

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

The square root of 1224261 is about 1106.4632845242. The cubic root of 1224261 is about 106.9772275176.

Adding to 1224261 its reverse (1624221), we get a palindrome (2848482).

It can be divided in two parts, 1224 and 261, that added together give a triangular number (1485 = T₅₄).

The spelling of 1224261 in words is "one million, two hundred twenty-four thousand, two hundred sixty-one".