423242031331421 has 4 divisors (see below), whose sum is σ = 424461749001312. Its totient is φ = 422022313661532.

The previous prime is 423242031331411. The next prime is 423242031331489. The reversal of 423242031331421 is 124133130242324.

It is a happy number.

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 423242031331421 - 2¹⁰ = 423242031330397 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 (423242031331411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609858834425 + ... + 609858835118.

It is an arithmetic number, because the mean of its divisors is an integer number (106115437250328).

Almost surely, 2^{423242031331421} is an apocalyptic number.

It is an amenable number.

423242031331421 is a deficient number, since it is larger than the sum of its proper divisors (1219717669891).

423242031331421 is a wasteful number, since it uses less digits than its factorization.

423242031331421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219717669890.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 423242031331421 its reverse (124133130242324), we get a palindrome (547375161573745).

The spelling of 423242031331421 in words is "four hundred twenty-three trillion, two hundred forty-two billion, thirty-one million, three hundred thirty-one thousand, four hundred twenty-one".