4005234040 has 16 divisors (see below), whose sum is σ = 9011776680. Its totient is φ = 1602093600.

The previous prime is 4005234031. The next prime is 4005234047. The reversal of 4005234040 is 404325004.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4005234047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50065386 + ... + 50065465.

Almost surely, 2^4005234040 is an apocalyptic number.

4005234040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4005234040 is an abundant number, since it is smaller than the sum of its proper divisors (5006542640).

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

4005234040 is a wasteful number, since it uses less digits than its factorization.

4005234040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100130862 (or 100130858 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 4005234040 is about 63286.9183955105. The cubic root of 4005234040 is about 1588.0931269104.

Adding to 4005234040 its reverse (404325004), we get a palindrome (4409559044).

The spelling of 4005234040 in words is "four billion, five million, two hundred thirty-four thousand, forty".