2142317145 has 24 divisors (see below), whose sum is σ = 3550000896. Its totient is φ = 1103163712.

The previous prime is 2142317143. The next prime is 2142317159. The reversal of 2142317145 is 5417132412.

It is not a de Polignac number, because 2142317145 - 2¹ = 2142317143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2142317143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72297 + ... + 97526.

It is an arithmetic number, because the mean of its divisors is an integer number (147916704).

Almost surely, 2^2142317145 is an apocalyptic number.

It is an amenable number.

2142317145 is a deficient number, since it is larger than the sum of its proper divisors (1407683751).

2142317145 is a wasteful number, since it uses less digits than its factorization.

2142317145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169889 (or 169860 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 2142317145 is about 46285.1719776431. The cubic root of 2142317145 is about 1289.1236852339.

Adding to 2142317145 its reverse (5417132412), we get a palindrome (7559449557).

The spelling of 2142317145 in words is "two billion, one hundred forty-two million, three hundred seventeen thousand, one hundred forty-five".