1224981 has 12 divisors (see below), whose sum is σ = 1784640. Its totient is φ = 809640.

The previous prime is 1224973. The next prime is 1224983. The reversal of 1224981 is 1894221.

1224981 = 24² + 25² + ... + 154².

It is not a de Polignac number, because 1224981 - 2³ = 1224973 is a prime.

It is a super-2 number, since 2×1224981² = 3001156900722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 660 + ... + 1698.

It is an arithmetic number, because the mean of its divisors is an integer number (148720).

2^1224981 is an apocalyptic number.

It is an amenable number.

1224981 is a deficient number, since it is larger than the sum of its proper divisors (559659).

1224981 is a wasteful number, since it uses less digits than its factorization.

1224981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176 (or 1173 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 1224981 is about 1106.7885977006. The cubic root of 1224981 is about 106.9981948628.

The spelling of 1224981 in words is "one million, two hundred twenty-four thousand, nine hundred eighty-one".