220342539 has 4 divisors (see below), whose sum is σ = 293790056. Its totient is φ = 146895024.

The previous prime is 220342517. The next prime is 220342547. The reversal of 220342539 is 935243022.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 220342539 - 2⁹ = 220342027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222342539) 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 3 ways as a sum of consecutive naturals, for example, 36723754 + ... + 36723759.

It is an arithmetic number, because the mean of its divisors is an integer number (73447514).

Almost surely, 2^220342539 is an apocalyptic number.

220342539 is a deficient number, since it is larger than the sum of its proper divisors (73447517).

220342539 is an equidigital number, since it uses as much as digits as its factorization.

220342539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73447516.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 220342539 is about 14843.9394703697. The cubic root of 220342539 is about 603.9942207757.

The spelling of 220342539 in words is "two hundred twenty million, three hundred forty-two thousand, five hundred thirty-nine".