423421020402 has 8 divisors (see below), whose sum is σ = 846842040816. Its totient is φ = 141140340132.

The previous prime is 423421020343. The next prime is 423421020427. The reversal of 423421020402 is 204020124324.

It is a sphenic number, since it is the product of 3 distinct primes.

423421020402 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35285085028 + ... + 35285085039.

It is an arithmetic number, because the mean of its divisors is an integer number (105855255102).

Almost surely, 2^423421020402 is an apocalyptic number.

423421020402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

423421020402 is a wasteful number, since it uses less digits than its factorization.

423421020402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70570170072.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 423421020402 its reverse (204020124324), we get a palindrome (627441144726).

The spelling of 423421020402 in words is "four hundred twenty-three billion, four hundred twenty-one million, twenty thousand, four hundred two".