1144664242 has 8 divisors (see below), whose sum is σ = 1719266796. Its totient is φ = 571575312.

The previous prime is 1144664237. The next prime is 1144664293. The reversal of 1144664242 is 2424664411.

It can be written as a sum of positive squares in 2 ways, for example, as 1099519281 + 45144961 = 33159^2 + 6719^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1144664198 and 1144664207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376513 + ... + 379540.

Almost surely, 2^1144664242 is an apocalyptic number.

1144664242 is a deficient number, since it is larger than the sum of its proper divisors (574602554).

1144664242 is an equidigital number, since it uses as much as digits as its factorization.

1144664242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756812.

The product of its digits is 36864, while the sum is 34.

The square root of 1144664242 is about 33832.8869888456. The cubic root of 1144664242 is about 1046.0666876408.

The spelling of 1144664242 in words is "one billion, one hundred forty-four million, six hundred sixty-four thousand, two hundred forty-two".