244140143 has 4 divisors (see below), whose sum is σ = 262920168. Its totient is φ = 225360120.

The previous prime is 244140119. The next prime is 244140151. The reversal of 244140143 is 341041442.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 244140143 - 2⁸ = 244139887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244140163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9389993 + ... + 9390018.

It is an arithmetic number, because the mean of its divisors is an integer number (65730042).

Almost surely, 2^244140143 is an apocalyptic number.

244140143 is a deficient number, since it is larger than the sum of its proper divisors (18780025).

244140143 is a wasteful number, since it uses less digits than its factorization.

244140143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18780024.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 244140143 is about 15624.9845759924. The cubic root of 244140143 is about 624.9995886931. Note that the first 3 decimals are identical.

Adding to 244140143 its reverse (341041442), we get a palindrome (585181585).

The spelling of 244140143 in words is "two hundred forty-four million, one hundred forty thousand, one hundred forty-three".