142775579 has 8 divisors (see below), whose sum is σ = 143833968. Its totient is φ = 141721600.

The previous prime is 142775573. The next prime is 142775597. The reversal of 142775579 is 975577241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142775579 is a prime.

It is a Duffinian number.

Its product of digits (617400) is a multiple of the sum of its prime divisors (2205).

It is not an unprimeable number, because it can be changed into a prime (142775573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88379 + ... + 89979.

It is an arithmetic number, because the mean of its divisors is an integer number (17979246).

Almost surely, 2^142775579 is an apocalyptic number.

142775579 is a deficient number, since it is larger than the sum of its proper divisors (1058389).

142775579 is a wasteful number, since it uses less digits than its factorization.

142775579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205.

The product of its digits is 617400, while the sum is 47.

The square root of 142775579 is about 11948.8735452343. The cubic root of 142775579 is about 522.6584506050.

The spelling of 142775579 in words is "one hundred forty-two million, seven hundred seventy-five thousand, five hundred seventy-nine".