143040561 has 4 divisors (see below), whose sum is σ = 190720752. Its totient is φ = 95360372.

The previous prime is 143040559. The next prime is 143040577. The reversal of 143040561 is 165040341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 143040561 - 2¹ = 143040559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143040551) 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, 23840091 + ... + 23840096.

It is an arithmetic number, because the mean of its divisors is an integer number (47680188).

Almost surely, 2^143040561 is an apocalyptic number.

It is an amenable number.

143040561 is a deficient number, since it is larger than the sum of its proper divisors (47680191).

143040561 is an equidigital number, since it uses as much as digits as its factorization.

143040561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47680190.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 143040561 is about 11959.9565634663. The cubic root of 143040561 is about 522.9815905788.

The spelling of 143040561 in words is "one hundred forty-three million, forty thousand, five hundred sixty-one".