142321205 has 16 divisors (see below), whose sum is σ = 184954224. Its totient is φ = 104509440.

The previous prime is 142321189. The next prime is 142321211. The reversal of 142321205 is 502123241.

It can be written as a sum of positive squares in 8 ways, for example, as 89453764 + 52867441 = 9458^2 + 7271^2 .

It is not a de Polignac number, because 142321205 - 2⁴ = 142321189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5717 + ... + 17813.

It is an arithmetic number, because the mean of its divisors is an integer number (11559639).

Almost surely, 2^142321205 is an apocalyptic number.

It is an amenable number.

142321205 is a deficient number, since it is larger than the sum of its proper divisors (42633019).

142321205 is a wasteful number, since it uses less digits than its factorization.

142321205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12296.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 142321205 is about 11929.8451373017. The cubic root of 142321205 is about 522.1034192218.

Adding to 142321205 its reverse (502123241), we get a palindrome (644444446).

The spelling of 142321205 in words is "one hundred forty-two million, three hundred twenty-one thousand, two hundred five".