4040402424 has 64 divisors (see below), whose sum is σ = 10391846400. Its totient is φ = 1308518016.

The previous prime is 4040402407. The next prime is 4040402437. The reversal of 4040402424 is 4242040404.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 4040402394 and 4040402403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115597 + ... + 146435.

It is an arithmetic number, because the mean of its divisors is an integer number (162372600).

Almost surely, 2^4040402424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4040402424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5195923200).

4040402424 is an abundant number, since it is smaller than the sum of its proper divisors (6351443976).

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

4040402424 is a wasteful number, since it uses less digits than its factorization.

4040402424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31004 (or 31000 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 4040402424 is about 63564.1599016301. The cubic root of 4040402424 is about 1592.7277286634.

Adding to 4040402424 its reverse (4242040404), we get a palindrome (8282442828).

The spelling of 4040402424 in words is "four billion, forty million, four hundred two thousand, four hundred twenty-four".