126064820 has 72 divisors (see below), whose sum is σ = 310391424. Its totient is φ = 42130368.

The previous prime is 126064801. The next prime is 126064849. The reversal of 126064820 is 28460621.

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 23 ways as a sum of consecutive naturals, for example, 258617 + ... + 259103.

It is an arithmetic number, because the mean of its divisors is an integer number (4310992).

Almost surely, 2^126064820 is an apocalyptic number.

126064820 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 126064820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155195712).

126064820 is an abundant number, since it is smaller than the sum of its proper divisors (184326604).

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

126064820 is a wasteful number, since it uses less digits than its factorization.

126064820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 126064820 is about 11227.8591013603. The cubic root of 126064820 is about 501.4157475343.

The spelling of 126064820 in words is "one hundred twenty-six million, sixty-four thousand, eight hundred twenty".