2101345240 has 32 divisors (see below), whose sum is σ = 4729914000. Its totient is φ = 840202624.

The previous prime is 2101345229. The next prime is 2101345271. The reversal of 2101345240 is 425431012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107331 + ... + 125389.

Almost surely, 2^2101345240 is an apocalyptic number.

2101345240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101345240 is an abundant number, since it is smaller than the sum of its proper divisors (2628568760).

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

2101345240 is a wasteful number, since it uses less digits than its factorization.

2101345240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20979 (or 20975 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2101345240 is about 45840.4323714338. The cubic root of 2101345240 is about 1280.8525488925.

Adding to 2101345240 its reverse (425431012), we get a palindrome (2526776252).

The spelling of 2101345240 in words is "two billion, one hundred one million, three hundred forty-five thousand, two hundred forty".