2102403445 has 8 divisors (see below), whose sum is σ = 2546030520. Its totient is φ = 1666491840.

The previous prime is 2102403439. The next prime is 2102403451. The reversal of 2102403445 is 5443042012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2102403439) and next prime (2102403451).

It can be written as a sum of positive squares in 4 ways, for example, as 997106929 + 1105296516 = 31577^2 + 33246^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2102403445 - 2⁹ = 2102402933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1928266 + ... + 1929355.

It is an arithmetic number, because the mean of its divisors is an integer number (318253815).

Almost surely, 2^2102403445 is an apocalyptic number.

It is an amenable number.

2102403445 is a deficient number, since it is larger than the sum of its proper divisors (443627075).

2102403445 is a wasteful number, since it uses less digits than its factorization.

2102403445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3857735.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2102403445 is about 45851.9731854584. The cubic root of 2102403445 is about 1281.0675186634.

Adding to 2102403445 its reverse (5443042012), we get a palindrome (7545445457).

The spelling of 2102403445 in words is "two billion, one hundred two million, four hundred three thousand, four hundred forty-five".