424331442421 has 4 divisors (see below), whose sum is σ = 424359376000. Its totient is φ = 424303508844.

The previous prime is 424331442401. The next prime is 424331442433. The reversal of 424331442421 is 124244133424.

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 424331442421 - 2⁵ = 424331442389 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 (424331442401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13943991 + ... + 13974388.

It is an arithmetic number, because the mean of its divisors is an integer number (106089844000).

Almost surely, 2^424331442421 is an apocalyptic number.

It is an amenable number.

424331442421 is a deficient number, since it is larger than the sum of its proper divisors (27933579).

424331442421 is a wasteful number, since it uses less digits than its factorization.

424331442421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27933578.

The product of its digits is 73728, while the sum is 34.

Adding to 424331442421 its reverse (124244133424), we get a palindrome (548575575845).

The spelling of 424331442421 in words is "four hundred twenty-four billion, three hundred thirty-one million, four hundred forty-two thousand, four hundred twenty-one".