1244017147 has 4 divisors (see below), whose sum is σ = 1286914320. Its totient is φ = 1201119976.

The previous prime is 1244017139. The next prime is 1244017157. The reversal of 1244017147 is 7417104421.

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 1244017147 - 2³ = 1244017139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1244017157) 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, 21448543 + ... + 21448600.

It is an arithmetic number, because the mean of its divisors is an integer number (321728580).

Almost surely, 2^1244017147 is an apocalyptic number.

1244017147 is a deficient number, since it is larger than the sum of its proper divisors (42897173).

1244017147 is an equidigital number, since it uses as much as digits as its factorization.

1244017147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42897172.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 1244017147 is about 35270.6272555508. The cubic root of 1244017147 is about 1075.4959736249.

The spelling of 1244017147 in words is "one billion, two hundred forty-four million, seventeen thousand, one hundred forty-seven".