10440230420 has 24 divisors (see below), whose sum is σ = 21930513864. Its totient is φ = 4174943616.

The previous prime is 10440230401. The next prime is 10440230473. The reversal of 10440230420 is 2403204401.

It can be written as a sum of positive squares in 4 ways, for example, as 663371536 + 9776858884 = 25756^2 + 98878^2 .

It is a super-2 number, since 2×10440230420² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 10440230392 and 10440230401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4742 + ... + 144578.

It is an arithmetic number, because the mean of its divisors is an integer number (913771411).

Almost surely, 2^10440230420 is an apocalyptic number.

10440230420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10440230420 is an abundant number, since it is smaller than the sum of its proper divisors (11490283444).

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

10440230420 is a wasteful number, since it uses less digits than its factorization.

10440230420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143579 (or 143577 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 10440230420 its reverse (2403204401), we get a palindrome (12843434821).

The spelling of 10440230420 in words is "ten billion, four hundred forty million, two hundred thirty thousand, four hundred twenty".