1244427 has 4 divisors (see below), whose sum is σ = 1659240. Its totient is φ = 829616.

The previous prime is 1244423. The next prime is 1244429. The reversal of 1244427 is 7244421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1244427 - 2² = 1244423 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 1244397 and 1244406.

It is not an unprimeable number, because it can be changed into a prime (1244423) 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, 207402 + ... + 207407.

It is an arithmetic number, because the mean of its divisors is an integer number (414810).

2^1244427 is an apocalyptic number.

1244427 is a deficient number, since it is larger than the sum of its proper divisors (414813).

1244427 is an equidigital number, since it uses as much as digits as its factorization.

1244427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414812.

The product of its digits is 1792, while the sum is 24.

The square root of 1244427 is about 1115.5388832309. The cubic root of 1244427 is about 107.5614071368.

Adding to 1244427 its reverse (7244421), we get a palindrome (8488848).

The spelling of 1244427 in words is "one million, two hundred forty-four thousand, four hundred twenty-seven".