10421240 has 32 divisors (see below), whose sum is σ = 23837760. Its totient is φ = 4099200.

The previous prime is 10421233. The next prime is 10421251. The reversal of 10421240 is 4212401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305 + ... + 4575.

It is an arithmetic number, because the mean of its divisors is an integer number (744930).

Almost surely, 2^10421240 is an apocalyptic number.

10421240 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 10421240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11918880).

10421240 is an abundant number, since it is smaller than the sum of its proper divisors (13416520).

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

10421240 is a wasteful number, since it uses less digits than its factorization.

10421240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4343 (or 4339 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 10421240 is about 3228.1945418453. The cubic root of 10421240 is about 218.4270729050.

Adding to 10421240 its reverse (4212401), we get a palindrome (14633641).

The spelling of 10421240 in words is "ten million, four hundred twenty-one thousand, two hundred forty".