205142142541 has 8 divisors (see below), whose sum is σ = 237947389760. Its totient is φ = 173211702048.

The previous prime is 205142142529. The next prime is 205142142599. The reversal of 205142142541 is 145241241502.

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

It is not a de Polignac number, because 205142142541 - 2⁵ = 205142142509 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 (205142145541) 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, 218701176 + ... + 218702113.

It is an arithmetic number, because the mean of its divisors is an integer number (29743423720).

Almost surely, 2^205142142541 is an apocalyptic number.

It is an amenable number.

205142142541 is a deficient number, since it is larger than the sum of its proper divisors (32805247219).

205142142541 is an equidigital number, since it uses as much as digits as its factorization.

205142142541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437403363.

The product of its (nonzero) digits is 12800, while the sum is 31.

The spelling of 205142142541 in words is "two hundred five billion, one hundred forty-two million, one hundred forty-two thousand, five hundred forty-one".