240564143 has 4 divisors (see below), whose sum is σ = 240700848. Its totient is φ = 240427440.

The previous prime is 240564133. The next prime is 240564167. The reversal of 240564143 is 341465042.

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 240564143 - 2¹⁶ = 240498607 is a prime.

It is a super-2 number, since 2×240564143² = 115742213794648898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240564113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65678 + ... + 69243.

It is an arithmetic number, because the mean of its divisors is an integer number (60175212).

Almost surely, 2^240564143 is an apocalyptic number.

240564143 is a deficient number, since it is larger than the sum of its proper divisors (136705).

240564143 is a wasteful number, since it uses less digits than its factorization.

240564143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136704.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 240564143 is about 15510.1303347200. The cubic root of 240564143 is about 621.9330433538.

The spelling of 240564143 in words is "two hundred forty million, five hundred sixty-four thousand, one hundred forty-three".