2102541145 has 4 divisors (see below), whose sum is σ = 2523049380. Its totient is φ = 1682032912.

The previous prime is 2102541101. The next prime is 2102541157. The reversal of 2102541145 is 5411452012.

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 1457177929 + 645363216 = 38173^2 + 25404^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102541145 - 2⁹ = 2102540633 is a prime.

It is a super-2 number, since 2×2102541145² = 8841358532835822050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210254110 + ... + 210254119.

It is an arithmetic number, because the mean of its divisors is an integer number (630762345).

Almost surely, 2^2102541145 is an apocalyptic number.

It is an amenable number.

2102541145 is a deficient number, since it is larger than the sum of its proper divisors (420508235).

2102541145 is an equidigital number, since it uses as much as digits as its factorization.

2102541145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420508234.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 2102541145 is about 45853.4747320200. The cubic root of 2102541145 is about 1281.0954865188.

Adding to 2102541145 its reverse (5411452012), we get a palindrome (7513993157).

The spelling of 2102541145 in words is "two billion, one hundred two million, five hundred forty-one thousand, one hundred forty-five".