242171355641 has 4 divisors (see below), whose sum is σ = 242950041984. Its totient is φ = 241392669300.

The previous prime is 242171355631. The next prime is 242171355653. The reversal of 242171355641 is 146553171242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242171355641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242171355611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389342705 + ... + 389343326.

It is an arithmetic number, because the mean of its divisors is an integer number (60737510496).

Almost surely, 2^242171355641 is an apocalyptic number.

It is an amenable number.

242171355641 is a deficient number, since it is larger than the sum of its proper divisors (778686343).

242171355641 is an equidigital number, since it uses as much as digits as its factorization.

242171355641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778686342.

The product of its digits is 201600, while the sum is 41.

The spelling of 242171355641 in words is "two hundred forty-two billion, one hundred seventy-one million, three hundred fifty-five thousand, six hundred forty-one".