242120404 has 6 divisors (see below), whose sum is σ = 423710714. Its totient is φ = 121060200.

The previous prime is 242120393. The next prime is 242120413. The reversal of 242120404 is 404021242.

It can be written as a sum of positive squares in only one way, i.e., 216090000 + 26030404 = 14700^2 + 5102^2 .

It is a congruent number.

It is an unprimeable number.

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, 30265047 + ... + 30265054.

Almost surely, 2^242120404 is an apocalyptic number.

It is an amenable number.

242120404 is a deficient number, since it is larger than the sum of its proper divisors (181590310).

242120404 is a wasteful number, since it uses less digits than its factorization.

242120404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60530105 (or 60530103 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 242120404 is about 15560.2186359961. The cubic root of 242120404 is about 623.2713010483.

Adding to 242120404 its reverse (404021242), we get a palindrome (646141646).

The spelling of 242120404 in words is "two hundred forty-two million, one hundred twenty thousand, four hundred four".