142106205 has 16 divisors (see below), whose sum is σ = 232916544. Its totient is φ = 73941120.

The previous prime is 142106203. The next prime is 142106219. The reversal of 142106205 is 502601241.

It is not a de Polignac number, because 142106205 - 2¹ = 142106203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142106203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114919 + ... + 116148.

It is an arithmetic number, because the mean of its divisors is an integer number (14557284).

Almost surely, 2^142106205 is an apocalyptic number.

142106205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142106205 is a deficient number, since it is larger than the sum of its proper divisors (90810339).

142106205 is a wasteful number, since it uses less digits than its factorization.

142106205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231116.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 142106205 is about 11920.8307176975. The cubic root of 142106205 is about 521.8403785224.

Adding to 142106205 its reverse (502601241), we get a palindrome (644707446).

It can be divided in two parts, 142106 and 205, that added together give a triangular number (142311 = T₅₃₃).

The spelling of 142106205 in words is "one hundred forty-two million, one hundred six thousand, two hundred five".