2101040 has 20 divisors (see below), whose sum is σ = 4885104. Its totient is φ = 840384.

The previous prime is 2101019. The next prime is 2101051. The reversal of 2101040 is 401012.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (8).

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 3 ways as a sum of consecutive naturals, for example, 13052 + ... + 13211.

2^2101040 is an apocalyptic number.

2101040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101040 is an abundant number, since it is smaller than the sum of its proper divisors (2784064).

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

2101040 is a wasteful number, since it uses less digits than its factorization.

2101040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26276 (or 26270 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 2101040 is about 1449.4964642937. The cubic root of 2101040 is about 128.0790527295.

Adding to 2101040 its reverse (401012), we get a palindrome (2502052).

The spelling of 2101040 in words is "two million, one hundred one thousand, forty".