424340243242321 has 6 divisors (see below), whose sum is σ = 493620282955410. Its totient is φ = 363720208493376.

The previous prime is 424340243242319. The next prime is 424340243242327. The reversal of 424340243242321 is 123242342043424.

It can be written as a sum of positive squares in only one way, i.e., 278305973075025 + 146034270167296 = 16682505^2 + 12084464^2 .

It is not a de Polignac number, because 424340243242321 - 2¹ = 424340243242319 is a prime.

It is a super-4 number, since 4×424340243242321⁴ (a number of 60 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (424340243242327) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4330002482016 + ... + 4330002482113.

It is an arithmetic number, because the mean of its divisors is an integer number (82270047159235).

Almost surely, 2^{424340243242321} is an apocalyptic number.

It is an amenable number.

424340243242321 is a deficient number, since it is larger than the sum of its proper divisors (69280039713089).

424340243242321 is an equidigital number, since it uses as much as digits as its factorization.

424340243242321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8660004964143 (or 8660004964136 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 40.

Adding to 424340243242321 its reverse (123242342043424), we get a palindrome (547582585285745).

The spelling of 424340243242321 in words is "four hundred twenty-four trillion, three hundred forty billion, two hundred forty-three million, two hundred forty-two thousand, three hundred twenty-one".