1242044245 has 16 divisors (see below), whose sum is σ = 1606671360. Its totient is φ = 916305984.

The previous prime is 1242044227. The next prime is 1242044257. The reversal of 1242044245 is 5424402421.

It is a cyclic number.

It is not a de Polignac number, because 1242044245 - 2⁵ = 1242044213 is a prime.

It is a congruent number.

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, 61866 + ... + 79444.

It is an arithmetic number, because the mean of its divisors is an integer number (100416960).

Almost surely, 2^1242044245 is an apocalyptic number.

It is an amenable number.

1242044245 is a deficient number, since it is larger than the sum of its proper divisors (364627115).

1242044245 is a wasteful number, since it uses less digits than its factorization.

1242044245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18684.

The product of its (nonzero) digits is 10240, while the sum is 28.

The square root of 1242044245 is about 35242.6480985751. The cubic root of 1242044245 is about 1074.9271254006.

Adding to 1242044245 its reverse (5424402421), we get a palindrome (6666446666).

It can be divided in two parts, 12420 and 44245, that added together give a palindrome (56665).

The spelling of 1242044245 in words is "one billion, two hundred forty-two million, forty-four thousand, two hundred forty-five".