2142640172 has 12 divisors (see below), whose sum is σ = 3750593280. Its totient is φ = 1071042096.

The previous prime is 2142640153. The next prime is 2142640177. The reversal of 2142640172 is 2710462412.

It is not an unprimeable number, because it can be changed into a prime (2142640177) 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, 51647 + ... + 83382.

It is an arithmetic number, because the mean of its divisors is an integer number (312549440).

Almost surely, 2^2142640172 is an apocalyptic number.

It is an amenable number.

2142640172 is a deficient number, since it is larger than the sum of its proper divisors (1607953108).

2142640172 is a wasteful number, since it uses less digits than its factorization.

2142640172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139000 (or 138998 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 2142640172 is about 46288.6613761945. The cubic root of 2142640172 is about 1289.1884750231.

The spelling of 2142640172 in words is "two billion, one hundred forty-two million, six hundred forty thousand, one hundred seventy-two".