2142005145 has 16 divisors (see below), whose sum is σ = 3916809600. Its totient is φ = 979202304.

The previous prime is 2142005137. The next prime is 2142005161. The reversal of 2142005145 is 5415002412.

It is not a de Polignac number, because 2142005145 - 2³ = 2142005137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10199920 + ... + 10200129.

It is an arithmetic number, because the mean of its divisors is an integer number (244800600).

Almost surely, 2^2142005145 is an apocalyptic number.

It is an amenable number.

2142005145 is a deficient number, since it is larger than the sum of its proper divisors (1774804455).

2142005145 is a wasteful number, since it uses less digits than its factorization.

2142005145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20400064.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 2142005145 is about 46281.8014450605. The cubic root of 2142005145 is about 1289.0611009557.

Adding to 2142005145 its reverse (5415002412), we get a palindrome (7557007557).

The spelling of 2142005145 in words is "two billion, one hundred forty-two million, five thousand, one hundred forty-five".