242120515045 has 16 divisors (see below), whose sum is σ = 312956900352. Its totient is φ = 179298218880.

The previous prime is 242120515003. The next prime is 242120515081. The reversal of 242120515045 is 540515021242.

It is not a de Polignac number, because 242120515045 - 2¹⁵ = 242120482277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242120514998 and 242120515016.

It is a congruent number.

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, 33954432 + ... + 33961561.

It is an arithmetic number, because the mean of its divisors is an integer number (19559806272).

Almost surely, 2^242120515045 is an apocalyptic number.

It is an amenable number.

242120515045 is a deficient number, since it is larger than the sum of its proper divisors (70836385307).

242120515045 is a wasteful number, since it uses less digits than its factorization.

242120515045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67916052.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 242120515045 its reverse (540515021242), we get a palindrome (782635536287).

The spelling of 242120515045 in words is "two hundred forty-two billion, one hundred twenty million, five hundred fifteen thousand, forty-five".