2140172 has 12 divisors (see below), whose sum is σ = 3756480. Its totient is φ = 1066896.

The previous prime is 2140169. The next prime is 2140199. The reversal of 2140172 is 2710412.

It is a self number, because there is not a number n which added to its sum of digits gives 2140172.

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, 1358 + ... + 2474.

It is an arithmetic number, because the mean of its divisors is an integer number (313040).

2^2140172 is an apocalyptic number.

It is an amenable number.

2140172 is a deficient number, since it is larger than the sum of its proper divisors (1616308).

2140172 is a wasteful number, since it uses less digits than its factorization.

2140172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600 (or 1598 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 2140172 is about 1462.9326710413. The cubic root of 2140172 is about 128.8693266431.

Adding to 2140172 its reverse (2710412), we get a palindrome (4850584).

The spelling of 2140172 in words is "two million, one hundred forty thousand, one hundred seventy-two".