423342021340420 has 72 divisors (see below), whose sum is σ = 1113715163867544. Its totient is φ = 133980771585024.

The previous prime is 423342021340409. The next prime is 423342021340439. The reversal of 423342021340420 is 24043120243324.

It can be written as a sum of positive squares in 4 ways, for example, as 56885504893504 + 366456516446916 = 7542248^2 + 19143054^2 .

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 16614666277 + ... + 16614691756.

It is an arithmetic number, because the mean of its divisors is an integer number (15468266164827).

Almost surely, 2^{423342021340420} is an apocalyptic number.

It is an amenable number.

423342021340420 is an abundant number, since it is smaller than the sum of its proper divisors (690373142527124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423342021340420 is a wasteful number, since it uses less digits than its factorization.

423342021340420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33229358069 (or 33229358060 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 423342021340420 its reverse (24043120243324), we get a palindrome (447385141583744).

The spelling of 423342021340420 in words is "four hundred twenty-three trillion, three hundred forty-two billion, twenty-one million, three hundred forty thousand, four hundred twenty".