2405140 has 24 divisors (see below), whose sum is σ = 5148360. Its totient is φ = 943488.

The previous prime is 2405107. The next prime is 2405141. The reversal of 2405140 is 415042.

It can be written as a sum of positive squares in 4 ways, for example, as 51984 + 2353156 = 228^2 + 1534^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2405141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75 + ... + 2194.

It is an arithmetic number, because the mean of its divisors is an integer number (214515).

2^2405140 is an apocalyptic number.

2405140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2405140 is an abundant number, since it is smaller than the sum of its proper divisors (2743220).

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

2405140 is a wasteful number, since it uses less digits than its factorization.

2405140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331 (or 2329 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2405140 is about 1550.8513790818. The cubic root of 2405140 is about 133.9821020129.

The spelling of 2405140 in words is "two million, four hundred five thousand, one hundred forty".