1144021355 has 8 divisors (see below), whose sum is σ = 1379795472. Its totient is φ = 910570528.

The previous prime is 1144021343. The next prime is 1144021393. The reversal of 1144021355 is 5531204411.

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

It is a cyclic number.

It is not a de Polignac number, because 1144021355 - 2¹⁴ = 1144004971 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 579737 + ... + 581706.

It is an arithmetic number, because the mean of its divisors is an integer number (172474434).

Almost surely, 2^1144021355 is an apocalyptic number.

1144021355 is a deficient number, since it is larger than the sum of its proper divisors (235774117).

1144021355 is a wasteful number, since it uses less digits than its factorization.

1144021355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161645.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1144021355 is about 33823.3847360077. The cubic root of 1144021355 is about 1045.8708140124.

Adding to 1144021355 its reverse (5531204411), we get a palindrome (6675225766).

The spelling of 1144021355 in words is "one billion, one hundred forty-four million, twenty-one thousand, three hundred fifty-five".