2130540 has 24 divisors (see below), whose sum is σ = 5965680. Its totient is φ = 568128.

The previous prime is 2130539. The next prime is 2130577. The reversal of 2130540 is 450312.

2130540 = 211² + 212² + ... + 250².

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17695 + ... + 17814.

It is an arithmetic number, because the mean of its divisors is an integer number (248570).

2^2130540 is an apocalyptic number.

2130540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2130540 is an abundant number, since it is smaller than the sum of its proper divisors (3835140).

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

2130540 is a wasteful number, since it uses less digits than its factorization.

2130540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35521 (or 35519 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 2130540 is about 1459.6369411604. The cubic root of 2130540 is about 128.6757072883.

Adding to 2130540 its reverse (450312), we get a palindrome (2580852).

The spelling of 2130540 in words is "two million, one hundred thirty thousand, five hundred forty".