242113021 has 8 divisors (see below), whose sum is σ = 245333088. Its totient is φ = 238914000.

The previous prime is 242112989. The next prime is 242113057. The reversal of 242113021 is 120311242.

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

It is a cyclic number.

It is not a de Polignac number, because 242113021 - 2⁵ = 242112989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242112986 and 242113004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242113061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18606 + ... + 28816.

It is an arithmetic number, because the mean of its divisors is an integer number (30666636).

Almost surely, 2^242113021 is an apocalyptic number.

It is an amenable number.

242113021 is a deficient number, since it is larger than the sum of its proper divisors (3220067).

242113021 is a wasteful number, since it uses less digits than its factorization.

242113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10523.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 242113021 is about 15559.9813945904. The cubic root of 242113021 is about 623.2649658273.

Adding to 242113021 its reverse (120311242), we get a palindrome (362424263).

The spelling of 242113021 in words is "two hundred forty-two million, one hundred thirteen thousand, twenty-one".