2102440445 has 16 divisors (see below), whose sum is σ = 2884629888. Its totient is φ = 1441032000.

The previous prime is 2102440441. The next prime is 2102440447. The reversal of 2102440445 is 5440442012.

It is not a de Polignac number, because 2102440445 - 2² = 2102440441 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102440441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74570 + ... + 98820.

It is an arithmetic number, because the mean of its divisors is an integer number (180289368).

Almost surely, 2^2102440445 is an apocalyptic number.

It is an amenable number.

2102440445 is a deficient number, since it is larger than the sum of its proper divisors (782189443).

2102440445 is a wasteful number, since it uses less digits than its factorization.

2102440445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26740.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 2102440445 is about 45852.3766559597. The cubic root of 2102440445 is about 1281.0750337482.

Adding to 2102440445 its reverse (5440442012), we get a palindrome (7542882457).

The spelling of 2102440445 in words is "two billion, one hundred two million, four hundred forty thousand, four hundred forty-five".