126171860 has 48 divisors (see below), whose sum is σ = 276165120. Its totient is φ = 48366720.

The previous prime is 126171827. The next prime is 126171889. The reversal of 126171860 is 68171621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66647 + ... + 68513.

It is an arithmetic number, because the mean of its divisors is an integer number (5753440).

Almost surely, 2^126171860 is an apocalyptic number.

126171860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126171860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138082560).

126171860 is an abundant number, since it is smaller than the sum of its proper divisors (149993260).

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

126171860 is a wasteful number, since it uses less digits than its factorization.

126171860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016 (or 2014 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 126171860 is about 11232.6248045593. The cubic root of 126171860 is about 501.5576225850.

The spelling of 126171860 in words is "one hundred twenty-six million, one hundred seventy-one thousand, eight hundred sixty".