424342128 has 80 divisors (see below), whose sum is σ = 1283417856. Its totient is φ = 118279680.

The previous prime is 424342099. The next prime is 424342129. The reversal of 424342128 is 821243424.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 424342095 and 424342104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424342129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1626 + ... + 29177.

Almost surely, 2^424342128 is an apocalyptic number.

424342128 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 424342128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (641708928).

424342128 is an abundant number, since it is smaller than the sum of its proper divisors (859075728).

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

424342128 is a wasteful number, since it uses less digits than its factorization.

424342128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30862 (or 30856 counting only the distinct ones).

The product of its digits is 12288, while the sum is 30.

The square root of 424342128 is about 20599.5662090249. The cubic root of 424342128 is about 751.4591610687.

The spelling of 424342128 in words is "four hundred twenty-four million, three hundred forty-two thousand, one hundred twenty-eight".