142106563 has 4 divisors (see below), whose sum is σ = 142516440. Its totient is φ = 141696688.

The previous prime is 142106557. The next prime is 142106579. The reversal of 142106563 is 365601241.

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 142106563 - 2¹³ = 142098371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142106663) 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, 204418 + ... + 205111.

It is an arithmetic number, because the mean of its divisors is an integer number (35629110).

Almost surely, 2^142106563 is an apocalyptic number.

142106563 is a deficient number, since it is larger than the sum of its proper divisors (409877).

142106563 is an equidigital number, since it uses as much as digits as its factorization.

142106563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409876.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 142106563 is about 11920.8457334201. The cubic root of 142106563 is about 521.8408167362.

The spelling of 142106563 in words is "one hundred forty-two million, one hundred six thousand, five hundred sixty-three".