242120545145 has 16 divisors (see below), whose sum is σ = 293297157120. Its totient is φ = 191862489024.

The previous prime is 242120545123. The next prime is 242120545151. The reversal of 242120545145 is 541545021242.

It is a cyclic number.

It is not a de Polignac number, because 242120545145 - 2⁶ = 242120545081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1823192 + ... + 1951478.

It is an arithmetic number, because the mean of its divisors is an integer number (18331072320).

Almost surely, 2^242120545145 is an apocalyptic number.

It is an amenable number.

242120545145 is a deficient number, since it is larger than the sum of its proper divisors (51176611975).

242120545145 is a wasteful number, since it uses less digits than its factorization.

242120545145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131864.

The product of its (nonzero) digits is 64000, while the sum is 35.

Adding to 242120545145 its reverse (541545021242), we get a palindrome (783665566387).

The spelling of 242120545145 in words is "two hundred forty-two billion, one hundred twenty million, five hundred forty-five thousand, one hundred forty-five".