2133405240 has 32 divisors (see below), whose sum is σ = 6400216080. Its totient is φ = 568908032.

The previous prime is 2133405233. The next prime is 2133405299. The reversal of 2133405240 is 425043312.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2133405240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8889069 + ... + 8889308.

Almost surely, 2^2133405240 is an apocalyptic number.

2133405240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2133405240 is an abundant number, since it is smaller than the sum of its proper divisors (4266810840).

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

2133405240 is a wasteful number, since it uses less digits than its factorization.

2133405240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17778391 (or 17778387 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 2133405240 is about 46188.7999411113. The cubic root of 2133405240 is about 1287.3336428790. Note that the first 3 decimals are identical.

Adding to 2133405240 its reverse (425043312), we get a palindrome (2558448552).

The spelling of 2133405240 in words is "two billion, one hundred thirty-three million, four hundred five thousand, two hundred forty".