242120514545 has 16 divisors (see below), whose sum is σ = 357593376000. Its totient is φ = 153254303424.

The previous prime is 242120514469. The next prime is 242120514583. The reversal of 242120514545 is 545415021242.

It is a cyclic number.

It is not a de Polignac number, because 242120514545 - 2⁸ = 242120514289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 266066045 + ... + 266066954.

It is an arithmetic number, because the mean of its divisors is an integer number (22349586000).

Almost surely, 2^242120514545 is an apocalyptic number.

It is an amenable number.

242120514545 is a deficient number, since it is larger than the sum of its proper divisors (115472861455).

242120514545 is a wasteful number, since it uses less digits than its factorization.

242120514545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532133024.

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

Adding to 242120514545 its reverse (545415021242), we get a palindrome (787535535787).

The spelling of 242120514545 in words is "two hundred forty-two billion, one hundred twenty million, five hundred fourteen thousand, five hundred forty-five".