142203205 has 4 divisors (see below), whose sum is σ = 170643852. Its totient is φ = 113762560.

The previous prime is 142203167. The next prime is 142203209. The reversal of 142203205 is 502302241.

142203205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 502302241 = 7 ⋅71757463.

It can be written as a sum of positive squares in 2 ways, for example, as 31911201 + 110292004 = 5649^2 + 10502^2 .

It is not a de Polignac number, because 142203205 - 2⁷ = 142203077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142203209) 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, 14220316 + ... + 14220325.

It is an arithmetic number, because the mean of its divisors is an integer number (42660963).

Almost surely, 2^142203205 is an apocalyptic number.

It is an amenable number.

142203205 is a deficient number, since it is larger than the sum of its proper divisors (28440647).

142203205 is an equidigital number, since it uses as much as digits as its factorization.

142203205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28440646.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 142203205 is about 11924.8985320631. The cubic root of 142203205 is about 521.9590855226.

Adding to 142203205 its reverse (502302241), we get a palindrome (644505446).

The spelling of 142203205 in words is "one hundred forty-two million, two hundred three thousand, two hundred five".