2103641 has 4 divisors (see below), whose sum is σ = 2132532. Its totient is φ = 2074752.

The previous prime is 2103617. The next prime is 2103653. The reversal of 2103641 is 1463012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1700416 + 403225 = 1304^2 + 635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2103641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2103601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14336 + ... + 14481.

It is an arithmetic number, because the mean of its divisors is an integer number (533133).

2^2103641 is an apocalyptic number.

It is an amenable number.

2103641 is a deficient number, since it is larger than the sum of its proper divisors (28891).

2103641 is an equidigital number, since it uses as much as digits as its factorization.

2103641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28890.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2103641 is about 1450.3933949105. The cubic root of 2103641 is about 128.1318831123.

Adding to 2103641 its reverse (1463012), we get a palindrome (3566653).

It can be divided in two parts, 2103 and 641, that added together give a cube (2744 = 14³).

The spelling of 2103641 in words is "two million, one hundred three thousand, six hundred forty-one".