4102215140 has 72 divisors (see below), whose sum is σ = 9479924160. Its totient is φ = 1486862784.

The previous prime is 4102215133. The next prime is 4102215167. The reversal of 4102215140 is 415122014.

It is a happy number.

4102215140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190817 + ... + 211223.

Almost surely, 2^4102215140 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 4102215140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4739962080).

4102215140 is an abundant number, since it is smaller than the sum of its proper divisors (5377709020).

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

4102215140 is a wasteful number, since it uses less digits than its factorization.

4102215140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20481 (or 20456 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 4102215140 is about 64048.5373759620. The cubic root of 4102215140 is about 1600.8088540489.

Adding to 4102215140 its reverse (415122014), we get a palindrome (4517337154).

The spelling of 4102215140 in words is "four billion, one hundred two million, two hundred fifteen thousand, one hundred forty".