242402032421 has 4 divisors (see below), whose sum is σ = 243041616000. Its totient is φ = 241762448844.

The previous prime is 242402032387. The next prime is 242402032441. The reversal of 242402032421 is 124230204242.

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, and also an emirpimes, since its reverse is a distinct semiprime: 124230204242 = 2 ⋅62115102121.

It is a cyclic number.

It is not a de Polignac number, because 242402032421 - 2¹⁰ = 242402031397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242402032441) 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, 319791221 + ... + 319791978.

It is an arithmetic number, because the mean of its divisors is an integer number (60760404000).

Almost surely, 2^242402032421 is an apocalyptic number.

It is an amenable number.

242402032421 is a deficient number, since it is larger than the sum of its proper divisors (639583579).

242402032421 is an equidigital number, since it uses as much as digits as its factorization.

242402032421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639583578.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 242402032421 its reverse (124230204242), we get a palindrome (366632236663).

The spelling of 242402032421 in words is "two hundred forty-two billion, four hundred two million, thirty-two thousand, four hundred twenty-one".