40020104240 has 80 divisors (see below), whose sum is σ = 94439955456. Its totient is φ = 15768748800.

The previous prime is 40020104233. The next prime is 40020104291. The reversal of 40020104240 is 4240102004.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8580149 + ... + 8584811.

Almost surely, 2^40020104240 is an apocalyptic number.

40020104240 is a gapful number since it is divisible by the number (40) 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 40020104240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47219977728).

40020104240 is an abundant number, since it is smaller than the sum of its proper divisors (54419851216).

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

40020104240 is a wasteful number, since it uses less digits than its factorization.

40020104240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6258 (or 6252 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 40020104240 its reverse (4240102004), we get a palindrome (44260206244).

The spelling of 40020104240 in words is "forty billion, twenty million, one hundred four thousand, two hundred forty".