126172 has 6 divisors (see below), whose sum is σ = 220808. Its totient is φ = 63084.

The previous prime is 126151. The next prime is 126173. The reversal of 126172 is 271621.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126173) by changing a digit.

126172 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15768 + ... + 15775.

2¹²⁶¹⁷² is an apocalyptic number.

It is an amenable number.

126172 is a deficient number, since it is larger than the sum of its proper divisors (94636).

126172 is a wasteful number, since it uses less digits than its factorization.

126172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31547 (or 31545 counting only the distinct ones).

The product of its digits is 168, while the sum is 19.

The square root of 126172 is about 355.2069819134. The cubic root of 126172 is about 50.1557808094.

Adding to 126172 its reverse (271621), we get a palindrome (397793).

The spelling of 126172 in words is "one hundred twenty-six thousand, one hundred seventy-two".