242120724554 has 8 divisors (see below), whose sum is σ = 384544680228. Its totient is φ = 113939164480.

The previous prime is 242120724553. The next prime is 242120724569. The reversal of 242120724554 is 455427021242.

It can be written as a sum of positive squares in 2 ways, for example, as 240514718929 + 1606005625 = 490423^2 + 40075^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (242120724553) 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, 3560598857 + ... + 3560598924.

Almost surely, 2^242120724554 is an apocalyptic number.

242120724554 is a deficient number, since it is larger than the sum of its proper divisors (142423955674).

242120724554 is a wasteful number, since it uses less digits than its factorization.

242120724554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7121197800.

The product of its (nonzero) digits is 179200, while the sum is 38.

Adding to 242120724554 its reverse (455427021242), we get a palindrome (697547745796).

The spelling of 242120724554 in words is "two hundred forty-two billion, one hundred twenty million, seven hundred twenty-four thousand, five hundred fifty-four".