126502530 has 128 divisors (see below), whose sum is σ = 395145216. Its totient is φ = 25132800.

The previous prime is 126502489. The next prime is 126502543. The reversal of 126502530 is 35205621.

It is a self number, because there is not a number n which added to its sum of digits gives 126502530.

It is an unprimeable 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 in 63 ways as a sum of consecutive naturals, for example, 51940 + ... + 54320.

It is an arithmetic number, because the mean of its divisors is an integer number (3087072).

Almost surely, 2^126502530 is an apocalyptic number.

126502530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 126502530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197572608).

126502530 is an abundant number, since it is smaller than the sum of its proper divisors (268642686).

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

126502530 is a wasteful number, since it uses less digits than its factorization.

126502530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 126502530 is about 11247.3343508584. The cubic root of 126502530 is about 501.9953995018.

The spelling of 126502530 in words is "one hundred twenty-six million, five hundred two thousand, five hundred thirty".