205523004142 has 8 divisors (see below), whose sum is σ = 324510006600. Its totient is φ = 97353001944.

The previous prime is 205523004131. The next prime is 205523004151. The reversal of 205523004142 is 241400325502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×205523004142³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 205523004142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2704250017 + ... + 2704250092.

It is an arithmetic number, because the mean of its divisors is an integer number (40563750825).

Almost surely, 2^205523004142 is an apocalyptic number.

205523004142 is a deficient number, since it is larger than the sum of its proper divisors (118987002458).

205523004142 is a wasteful number, since it uses less digits than its factorization.

205523004142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5408500130.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 205523004142 its reverse (241400325502), we get a palindrome (446923329644).

The spelling of 205523004142 in words is "two hundred five billion, five hundred twenty-three million, four thousand, one hundred forty-two".