126109500 has 96 divisors (see below), whose sum is σ = 400667904. Its totient is φ = 30568000.

The previous prime is 126109499. The next prime is 126109523. The reversal of 126109500 is 5901621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12679 + ... + 20321.

It is an arithmetic number, because the mean of its divisors is an integer number (4173624).

Almost surely, 2^126109500 is an apocalyptic number.

126109500 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 126109500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200333952).

126109500 is an abundant number, since it is smaller than the sum of its proper divisors (274558404).

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

126109500 is a wasteful number, since it uses less digits than its factorization.

126109500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7676 (or 7664 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 126109500 is about 11229.8486187482. The cubic root of 126109500 is about 501.4749779350.

The spelling of 126109500 in words is "one hundred twenty-six million, one hundred nine thousand, five hundred".