2102172 has 24 divisors (see below), whose sum is σ = 5064192. Its totient is φ = 678000.

The previous prime is 2102171. The next prime is 2102173. The reversal of 2102172 is 2712012.

It is an interprime number because it is at equal distance from previous prime (2102171) and next prime (2102173).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2454 + ... + 3197.

It is an arithmetic number, because the mean of its divisors is an integer number (211008).

2^2102172 is an apocalyptic number.

It is an amenable number.

2102172 is an abundant number, since it is smaller than the sum of its proper divisors (2962020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2102172 is a wasteful number, since it uses less digits than its factorization.

2102172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5689 (or 5687 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 2102172 is about 1449.8868921402. The cubic root of 2102172 is about 128.1020507776.

Adding to 2102172 its reverse (2712012), we get a palindrome (4814184).

The spelling of 2102172 in words is "two million, one hundred two thousand, one hundred seventy-two".