2001105240 has 64 divisors (see below), whose sum is σ = 6013928160. Its totient is φ = 532684800.

The previous prime is 2001105217. The next prime is 2001105311. The reversal of 2001105240 is 425011002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54790 + ... + 83690.

Almost surely, 2^2001105240 is an apocalyptic number.

2001105240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001105240 is an abundant number, since it is smaller than the sum of its proper divisors (4012822920).

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

2001105240 is a wasteful number, since it uses less digits than its factorization.

2001105240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29492 (or 29488 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 2001105240 is about 44733.7148021489. The cubic root of 2001105240 is about 1260.1530930131.

Adding to 2001105240 its reverse (425011002), we get a palindrome (2426116242).

The spelling of 2001105240 in words is "two billion, one million, one hundred five thousand, two hundred forty".