10421010 has 48 divisors (see below), whose sum is σ = 27420120. Its totient is φ = 2745600.

The previous prime is 10421009. The next prime is 10421023. The reversal of 10421010 is 1012401.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3017169 + 7403841 = 1737^2 + 2721^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10420983 and 10421001.

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, 7360 + ... + 8660.

Almost surely, 2^10421010 is an apocalyptic number.

10421010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10421010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13710060).

10421010 is an abundant number, since it is smaller than the sum of its proper divisors (16999110).

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

10421010 is a wasteful number, since it uses less digits than its factorization.

10421010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403 (or 1400 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 10421010 is about 3228.1589180212. The cubic root of 10421010 is about 218.4254659755.

Adding to 10421010 its reverse (1012401), we get a palindrome (11433411).

The spelling of 10421010 in words is "ten million, four hundred twenty-one thousand, ten".