205163142 has 32 divisors (see below), whose sum is σ = 417374208. Its totient is φ = 67219776.

The previous prime is 205163099. The next prime is 205163149. The reversal of 205163142 is 241361502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205163149) 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, 167143 + ... + 168365.

It is an arithmetic number, because the mean of its divisors is an integer number (13042944).

Almost surely, 2^205163142 is an apocalyptic number.

205163142 is an abundant number, since it is smaller than the sum of its proper divisors (212211066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205163142 is a wasteful number, since it uses less digits than its factorization.

205163142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 205163142 is about 14323.5170960208. The cubic root of 205163142 is about 589.7932264023.

The spelling of 205163142 in words is "two hundred five million, one hundred sixty-three thousand, one hundred forty-two".