2141005345 has 4 divisors (see below), whose sum is σ = 2569206420. Its totient is φ = 1712804272.

The previous prime is 2141005343. The next prime is 2141005357. The reversal of 2141005345 is 5435001412.

It is a happy number.

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 1221642304 + 919363041 = 34952^2 + 30321^2 .

It is a cyclic number.

It is not a de Polignac number, because 2141005345 - 2¹ = 2141005343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2141005343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214100530 + ... + 214100539.

It is an arithmetic number, because the mean of its divisors is an integer number (642301605).

Almost surely, 2^2141005345 is an apocalyptic number.

It is an amenable number.

2141005345 is a deficient number, since it is larger than the sum of its proper divisors (428201075).

2141005345 is an equidigital number, since it uses as much as digits as its factorization.

2141005345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428201074.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2141005345 is about 46270.9989626332. The cubic root of 2141005345 is about 1288.8605094890.

Adding to 2141005345 its reverse (5435001412), we get a palindrome (7576006757).

The spelling of 2141005345 in words is "two billion, one hundred forty-one million, five thousand, three hundred forty-five".