126099520 has 56 divisors (see below), whose sum is σ = 305409600. Its totient is φ = 49577472.

The previous prime is 126099509. The next prime is 126099539. The reversal of 126099520 is 25990621.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15541 + ... + 22219.

Almost surely, 2^126099520 is an apocalyptic number.

126099520 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 126099520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152704800).

126099520 is an abundant number, since it is smaller than the sum of its proper divisors (179310080).

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

126099520 is an equidigital number, since it uses as much as digits as its factorization.

126099520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6755 (or 6745 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 126099520 is about 11229.4042584636. The cubic root of 126099520 is about 501.4617490815.

The spelling of 126099520 in words is "one hundred twenty-six million, ninety-nine thousand, five hundred twenty".