30240143 has 2 divisors, whose sum is σ = 30240144. Its totient is φ = 30240142.

The previous prime is 30240139. The next prime is 30240149. The reversal of 30240143 is 34104203.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30240143 - 2² = 30240139 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30240149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15120071 + 15120072.

It is an arithmetic number, because the mean of its divisors is an integer number (15120072).

Almost surely, 2^30240143 is an apocalyptic number.

30240143 is a deficient number, since it is larger than the sum of its proper divisors (1).

30240143 is an equidigital number, since it uses as much as digits as its factorization.

30240143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 30240143 is about 5499.1038360809. The cubic root of 30240143 is about 311.5501371994.

Adding to 30240143 its reverse (34104203), we get a palindrome (64344346).

The spelling of 30240143 in words is "thirty million, two hundred forty thousand, one hundred forty-three".