4100021240 has 128 divisors (see below), whose sum is σ = 11198269440. Its totient is φ = 1318864896.

The previous prime is 4100021227. The next prime is 4100021273. The reversal of 4100021240 is 421200014.

It is a super-2 number, since 2×4100021240² = 33620348336902275200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1745747 + ... + 1748093.

It is an arithmetic number, because the mean of its divisors is an integer number (87486480).

Almost surely, 2^4100021240 is an apocalyptic number.

4100021240 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 4100021240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5599134720).

4100021240 is an abundant number, since it is smaller than the sum of its proper divisors (7098248200).

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

4100021240 is a wasteful number, since it uses less digits than its factorization.

4100021240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2749 (or 2745 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 4100021240 is about 64031.4082306488. The cubic root of 4100021240 is about 1600.5234277043.

Adding to 4100021240 its reverse (421200014), we get a palindrome (4521221254).

The spelling of 4100021240 in words is "four billion, one hundred million, twenty-one thousand, two hundred forty".