2103042145 has 12 divisors (see below), whose sum is σ = 2638148436. Its totient is φ = 1609282400.

The previous prime is 2103042107. The next prime is 2103042203. The reversal of 2103042145 is 5412403012.

It can be written as a sum of positive squares in 2 ways, for example, as 219395344 + 1883646801 = 14812^2 + 43401^2 .

It is not a de Polignac number, because 2103042145 - 2⁷ = 2103042017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 394906 + ... + 400195.

It is an arithmetic number, because the mean of its divisors is an integer number (219845703).

Almost surely, 2^2103042145 is an apocalyptic number.

It is an amenable number.

2103042145 is a deficient number, since it is larger than the sum of its proper divisors (535106291).

2103042145 is an equidigital number, since it uses as much as digits as its factorization.

2103042145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795152 (or 795129 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2103042145 is about 45858.9374604340. The cubic root of 2103042145 is about 1281.1972329012.

Adding to 2103042145 its reverse (5412403012), we get a palindrome (7515445157).

The spelling of 2103042145 in words is "two billion, one hundred three million, forty-two thousand, one hundred forty-five".