10043212440 has 128 divisors (see below), whose sum is σ = 31057551360. Its totient is φ = 2596629504.

The previous prime is 10043212373. The next prime is 10043212511. The reversal of 10043212440 is 4421234001.

It is a super-2 number, since 2×10043212440² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 699817 + ... + 714023.

It is an arithmetic number, because the mean of its divisors is an integer number (242637120).

Almost surely, 2^10043212440 is an apocalyptic number.

10043212440 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 10043212440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15528775680).

10043212440 is an abundant number, since it is smaller than the sum of its proper divisors (21014338920).

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

10043212440 is a wasteful number, since it uses less digits than its factorization.

10043212440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14401 (or 14397 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 10043212440 its reverse (4421234001), we get a palindrome (14464446441).

The spelling of 10043212440 in words is "ten billion, forty-three million, two hundred twelve thousand, four hundred forty".