423243130530 has 128 divisors (see below), whose sum is σ = 1132172328960. Its totient is φ = 100379831040.

The previous prime is 423243130511. The next prime is 423243130537. The reversal of 423243130530 is 35031342324.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (423243130537) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54544791 + ... + 54552549.

It is an arithmetic number, because the mean of its divisors is an integer number (8845096320).

Almost surely, 2^423243130530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423243130530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (566086164480).

423243130530 is an abundant number, since it is smaller than the sum of its proper divisors (708929198430).

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

423243130530 is a wasteful number, since it uses less digits than its factorization.

423243130530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11344.

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 423243130530 its reverse (35031342324), we get a palindrome (458274472854).

The spelling of 423243130530 in words is "four hundred twenty-three billion, two hundred forty-three million, one hundred thirty thousand, five hundred thirty".