1244147 has 4 divisors (see below), whose sum is σ = 1246440. Its totient is φ = 1241856.

The previous prime is 1244143. The next prime is 1244149. The reversal of 1244147 is 7414421.

It is a happy number.

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 1244147 - 2² = 1244143 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1244141) 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, 179 + ... + 1587.

It is an arithmetic number, because the mean of its divisors is an integer number (311610).

2^1244147 is an apocalyptic number.

1244147 is a deficient number, since it is larger than the sum of its proper divisors (2293).

1244147 is an equidigital number, since it uses as much as digits as its factorization.

1244147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292.

The product of its digits is 896, while the sum is 23.

The square root of 1244147 is about 1115.4133762870. The cubic root of 1244147 is about 107.5533393130.

Adding to 1244147 its reverse (7414421), we get a palindrome (8658568).

It can be divided in two parts, 124414 and 7, that added together give a palindrome (124421).

The spelling of 1244147 in words is "one million, two hundred forty-four thousand, one hundred forty-seven".