1224901 has 4 divisors (see below), whose sum is σ = 1296972. Its totient is φ = 1152832.

The previous prime is 1224893. The next prime is 1224913. The reversal of 1224901 is 1094221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1094221 = 43 ⋅25447.

It can be written as a sum of positive squares in 2 ways, for example, as 504100 + 720801 = 710^2 + 849^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224901 - 2³ = 1224893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36010 + ... + 36043.

It is an arithmetic number, because the mean of its divisors is an integer number (324243).

2^1224901 is an apocalyptic number.

It is an amenable number.

1224901 is a deficient number, since it is larger than the sum of its proper divisors (72071).

1224901 is an equidigital number, since it uses as much as digits as its factorization.

1224901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72070.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1224901 is about 1106.7524565141. The cubic root of 1224901 is about 106.9958655636.

The spelling of 1224901 in words is "one million, two hundred twenty-four thousand, nine hundred one".