2121502040 has 48 divisors (see below), whose sum is σ = 5552712000. Its totient is φ = 727371456.

The previous prime is 2121502007. The next prime is 2121502067. The reversal of 2121502040 is 402051212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 539240 + ... + 543159.

It is an arithmetic number, because the mean of its divisors is an integer number (115681500).

Almost surely, 2^2121502040 is an apocalyptic number.

2121502040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121502040 is an abundant number, since it is smaller than the sum of its proper divisors (3431209960).

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

2121502040 is a wasteful number, since it uses less digits than its factorization.

2121502040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082424 (or 1082413 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 2121502040 is about 46059.7659568522. The cubic root of 2121502040 is about 1284.9349773050.

Adding to 2121502040 its reverse (402051212), we get a palindrome (2523553252).

The spelling of 2121502040 in words is "two billion, one hundred twenty-one million, five hundred two thousand, forty".