205012142 has 16 divisors (see below), whose sum is σ = 310286592. Its totient is φ = 101587680.

The previous prime is 205012141. The next prime is 205012217. The reversal of 205012142 is 241210502.

205012142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 205012142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205012141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120248 + ... + 121940.

It is an arithmetic number, because the mean of its divisors is an integer number (19392912).

Almost surely, 2^205012142 is an apocalyptic number.

205012142 is a deficient number, since it is larger than the sum of its proper divisors (105274450).

205012142 is a wasteful number, since it uses less digits than its factorization.

205012142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 205012142 is about 14318.2450740305. The cubic root of 205012142 is about 589.6484950204.

Adding to 205012142 its reverse (241210502), we get a palindrome (446222644).

The spelling of 205012142 in words is "two hundred five million, twelve thousand, one hundred forty-two".