10421004120 has 128 divisors (see below), whose sum is σ = 32276975040. Its totient is φ = 2689597440.

The previous prime is 10421004103. The next prime is 10421004127. The reversal of 10421004120 is 2140012401.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 10421004120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10421004127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 850840 + ... + 863000.

Almost surely, 2^10421004120 is an apocalyptic number.

10421004120 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 10421004120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16138487520).

10421004120 is an abundant number, since it is smaller than the sum of its proper divisors (21855970920).

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

10421004120 is a wasteful number, since it uses less digits than its factorization.

10421004120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12405 (or 12401 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 10421004120 its reverse (2140012401), we get a palindrome (12561016521).

The spelling of 10421004120 in words is "ten billion, four hundred twenty-one million, four thousand, one hundred twenty".