2100740 has 12 divisors (see below), whose sum is σ = 4411596. Its totient is φ = 840288.

The previous prime is 2100737. The next prime is 2100743. The reversal of 2100740 is 470012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2100737) and next prime (2100743).

It can be written as a sum of positive squares in 2 ways, for example, as 315844 + 1784896 = 562^2 + 1336^2 .

It is not an unprimeable number, because it can be changed into a prime (2100743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52499 + ... + 52538.

It is an arithmetic number, because the mean of its divisors is an integer number (367633).

2^2100740 is an apocalyptic number.

2100740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100740 is an abundant number, since it is smaller than the sum of its proper divisors (2310856).

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

2100740 is a wasteful number, since it uses less digits than its factorization.

2100740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105046 (or 105044 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 2100740 is about 1449.3929763870. The cubic root of 2100740 is about 128.0729564558.

Adding to 2100740 its reverse (470012), we get a palindrome (2570752).

The spelling of 2100740 in words is "two million, one hundred thousand, seven hundred forty".