4100021040 has 80 divisors (see below), whose sum is σ = 12756156768. Its totient is φ = 1089374208.

The previous prime is 4100021017. The next prime is 4100021047. The reversal of 4100021040 is 401200014.

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

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (4100021047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35644 + ... + 97316.

Almost surely, 2^4100021040 is an apocalyptic number.

4100021040 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 4100021040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6378078384).

4100021040 is an abundant number, since it is smaller than the sum of its proper divisors (8656135728).

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

4100021040 is a wasteful number, since it uses less digits than its factorization.

4100021040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61966 (or 61960 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 4100021040 is about 64031.4066689152. The cubic root of 4100021040 is about 1600.5234016797.

Adding to 4100021040 its reverse (401200014), we get a palindrome (4501221054).

The spelling of 4100021040 in words is "four billion, one hundred million, twenty-one thousand, forty".