244021143 has 8 divisors (see below), whose sum is σ = 325947888. Its totient is φ = 162387584.

The previous prime is 244021139. The next prime is 244021159. The reversal of 244021143 is 341120442.

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 244021143 - 2² = 244021139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244021103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71346 + ... + 74687.

It is an arithmetic number, because the mean of its divisors is an integer number (40743486).

Almost surely, 2^244021143 is an apocalyptic number.

244021143 is a deficient number, since it is larger than the sum of its proper divisors (81926745).

244021143 is a wasteful number, since it uses less digits than its factorization.

244021143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146593.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 244021143 is about 15621.1761080912. The cubic root of 244021143 is about 624.8980253895.

Adding to 244021143 its reverse (341120442), we get a palindrome (585141585).

The spelling of 244021143 in words is "two hundred forty-four million, twenty-one thousand, one hundred forty-three".