242120544434 has 4 divisors (see below), whose sum is σ = 363180816654. Its totient is φ = 121060272216.

The previous prime is 242120544409. The next prime is 242120544437. The reversal of 242120544434 is 434445021242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 214911052225 + 27209492209 = 463585^2 + 164953^2 .

It is a junction number, because it is equal to n+sod(n) for n = 242120544394 and 242120544403.

It is not an unprimeable number, because it can be changed into a prime (242120544437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60530136107 + ... + 60530136110.

Almost surely, 2^242120544434 is an apocalyptic number.

242120544434 is a deficient number, since it is larger than the sum of its proper divisors (121060272220).

242120544434 is a wasteful number, since it uses less digits than its factorization.

242120544434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121060272219.

The product of its (nonzero) digits is 122880, while the sum is 35.

Adding to 242120544434 its reverse (434445021242), we get a palindrome (676565565676).

The spelling of 242120544434 in words is "two hundred forty-two billion, one hundred twenty million, five hundred forty-four thousand, four hundred thirty-four".