242120203401 has 4 divisors (see below), whose sum is σ = 322826937872. Its totient is φ = 161413468932.

The previous prime is 242120203327. The next prime is 242120203417. The reversal of 242120203401 is 104302021242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 242120203401 - 2¹⁰ = 242120202377 is a prime.

It is a super-2 number, since 2×242120203401² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242120203421) 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, 40353367231 + ... + 40353367236.

It is an arithmetic number, because the mean of its divisors is an integer number (80706734468).

Almost surely, 2^242120203401 is an apocalyptic number.

It is an amenable number.

242120203401 is a deficient number, since it is larger than the sum of its proper divisors (80706734471).

242120203401 is an equidigital number, since it uses as much as digits as its factorization.

242120203401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80706734470.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 242120203401 its reverse (104302021242), we get a palindrome (346422224643).

The spelling of 242120203401 in words is "two hundred forty-two billion, one hundred twenty million, two hundred three thousand, four hundred one".