243966126 has 16 divisors (see below), whose sum is σ = 488191104. Its totient is φ = 81278904.

The previous prime is 243966103. The next prime is 243966139. The reversal of 243966126 is 621669342.

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 7 ways as a sum of consecutive naturals, for example, 2781 + ... + 22263.

It is an arithmetic number, because the mean of its divisors is an integer number (30511944).

Almost surely, 2^243966126 is an apocalyptic number.

243966126 is an abundant number, since it is smaller than the sum of its proper divisors (244224978).

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

243966126 is a wasteful number, since it uses less digits than its factorization.

243966126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21575.

The product of its digits is 93312, while the sum is 39.

The square root of 243966126 is about 15619.4150338609. The cubic root of 243966126 is about 624.8510586959.

The spelling of 243966126 in words is "two hundred forty-three million, nine hundred sixty-six thousand, one hundred twenty-six".