242101422421 has 4 divisors (see below), whose sum is σ = 242237207392. Its totient is φ = 241965637452.

The previous prime is 242101422347. The next prime is 242101422461. The reversal of 242101422421 is 124224101242.

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 a cyclic number.

It is not a de Polignac number, because 242101422421 - 2²⁵ = 242067867989 is a prime.

It is a super-2 number, since 2×242101422421² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242101422461) 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, 67889811 + ... + 67893376.

It is an arithmetic number, because the mean of its divisors is an integer number (60559301848).

Almost surely, 2^242101422421 is an apocalyptic number.

It is an amenable number.

242101422421 is a deficient number, since it is larger than the sum of its proper divisors (135784971).

242101422421 is a wasteful number, since it uses less digits than its factorization.

242101422421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135784970.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 242101422421 its reverse (124224101242), we get a palindrome (366325523663).

The spelling of 242101422421 in words is "two hundred forty-two billion, one hundred one million, four hundred twenty-two thousand, four hundred twenty-one".