128010420 has 72 divisors (see below), whose sum is σ = 390770016. Its totient is φ = 33918912.

The previous prime is 128010419. The next prime is 128010451. The reversal of 128010420 is 24010821.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 128010393 and 128010402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27159 + ... + 31521.

Almost surely, 2^128010420 is an apocalyptic number.

128010420 is a gapful number since it is divisible by the number (10) 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 128010420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195385008).

128010420 is an abundant number, since it is smaller than the sum of its proper divisors (262759596).

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

128010420 is a wasteful number, since it uses less digits than its factorization.

128010420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4541 (or 4536 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 128010420 is about 11314.1689929044. The cubic root of 128010420 is about 503.9820949799.

The spelling of 128010420 in words is "one hundred twenty-eight million, ten thousand, four hundred twenty".