2130172 has 12 divisors (see below), whose sum is σ = 4066776. Its totient is φ = 968240.

The previous prime is 2130169. The next prime is 2130173. The reversal of 2130172 is 2710312.

It is a happy number.

It is a d-powerful number, because it can be written as 2¹⁵ + 1 + 3⁵ + 0 + 1 + 7 + 2²¹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24163 + ... + 24250.

It is an arithmetic number, because the mean of its divisors is an integer number (338898).

2^2130172 is an apocalyptic number.

2130172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2130172 is a deficient number, since it is larger than the sum of its proper divisors (1936604).

2130172 is a wasteful number, since it uses less digits than its factorization.

2130172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48428 (or 48426 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 2130172 is about 1459.5108769721. The cubic root of 2130172 is about 128.6682983080.

Adding to 2130172 its reverse (2710312), we get a palindrome (4840484).

The spelling of 2130172 in words is "two million, one hundred thirty thousand, one hundred seventy-two".