10421000520 has 192 divisors, whose sum is σ = 36574027200. Its totient is φ = 2368396800.

The previous prime is 10421000479. The next prime is 10421000533. The reversal of 10421000520 is 2500012401.

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 10421000520.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1047570 + ... + 1057470.

It is an arithmetic number, because the mean of its divisors is an integer number (190489725).

Almost surely, 2^10421000520 is an apocalyptic number.

10421000520 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 10421000520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18287013600).

10421000520 is an abundant number, since it is smaller than the sum of its proper divisors (26153026680).

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

10421000520 is a wasteful number, since it uses less digits than its factorization.

10421000520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10108 (or 10097 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 10421000520 its reverse (2500012401), we get a palindrome (12921012921).

The spelling of 10421000520 in words is "ten billion, four hundred twenty-one million, five hundred twenty", and thus it is an aban number.