1244421 has 18 divisors (see below), whose sum is σ = 1865682. Its totient is φ = 799200.

The previous prime is 1244401. The next prime is 1244423.

1244421 is a `hidden beast` number, since 1 + 244 + 421 = 666.

1244421 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 3 ways, for example, as 1028196 + 216225 = 1014^2 + 465^2 .

It is not a de Polignac number, because 1244421 - 2⁶ = 1244357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1244394 and 1244403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244423) 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 17 ways as a sum of consecutive naturals, for example, 12271 + ... + 12371.

It is an arithmetic number, because the mean of its divisors is an integer number (103649).

2^1244421 is an apocalyptic number.

It is an amenable number.

1244421 is a deficient number, since it is larger than the sum of its proper divisors (621261).

1244421 is a wasteful number, since it uses less digits than its factorization.

1244421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 141 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 1244421 is about 1115.5361939444. The cubic root of 1244421 is about 107.5612342675.

The spelling of 1244421 in words is "one million, two hundred forty-four thousand, four hundred twenty-one".