1244143345 has 16 divisors (see below), whose sum is σ = 1526065920. Its totient is φ = 973289344.

The previous prime is 1244143337. The next prime is 1244143361. The reversal of 1244143345 is 5433414421.

It is a cyclic number.

It is not a de Polignac number, because 1244143345 - 2³ = 1244143337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504726 + ... + 507184.

It is an arithmetic number, because the mean of its divisors is an integer number (95379120).

Almost surely, 2^1244143345 is an apocalyptic number.

It is an amenable number.

1244143345 is a deficient number, since it is larger than the sum of its proper divisors (281922575).

1244143345 is a wasteful number, since it uses less digits than its factorization.

1244143345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4664.

The product of its digits is 23040, while the sum is 31.

The square root of 1244143345 is about 35272.4162058683. The cubic root of 1244143345 is about 1075.5323399113.

Adding to 1244143345 its reverse (5433414421), we get a palindrome (6677557766).

The spelling of 1244143345 in words is "one billion, two hundred forty-four million, one hundred forty-three thousand, three hundred forty-five".