4040424420 has 192 divisors, whose sum is σ = 12162286080. Its totient is φ = 1000194048.

The previous prime is 4040424407. The next prime is 4040424439. The reversal of 4040424420 is 244240404.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6244537 + ... + 6245183.

It is an arithmetic number, because the mean of its divisors is an integer number (63345240).

Almost surely, 2^4040424420 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 4040424420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6081143040).

4040424420 is an abundant number, since it is smaller than the sum of its proper divisors (8121861660).

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

4040424420 is a wasteful number, since it uses less digits than its factorization.

4040424420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822 (or 820 counting only the distinct ones).

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

The square root of 4040424420 is about 63564.3329234249. The cubic root of 4040424420 is about 1592.7306189345.

Adding to 4040424420 its reverse (244240404), we get a palindrome (4284664824).

The spelling of 4040424420 in words is "four billion, forty million, four hundred twenty-four thousand, four hundred twenty".