126218516 has 12 divisors (see below), whose sum is σ = 224503860. Its totient is φ = 62074560.

The previous prime is 126218513. The next prime is 126218563. The reversal of 126218516 is 615812621.

It can be written as a sum of positive squares in 2 ways, for example, as 1449616 + 124768900 = 1204^2 + 11170^2 .

It is a super-2 number, since 2×126218516² = 31862227562484512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126218513) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 258401 + ... + 258888.

It is an arithmetic number, because the mean of its divisors is an integer number (18708655).

Almost surely, 2^126218516 is an apocalyptic number.

It is an amenable number.

126218516 is a deficient number, since it is larger than the sum of its proper divisors (98285344).

126218516 is a wasteful number, since it uses less digits than its factorization.

126218516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517354 (or 517352 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 126218516 is about 11234.7014201535. The cubic root of 126218516 is about 501.6194371836.

The spelling of 126218516 in words is "one hundred twenty-six million, two hundred eighteen thousand, five hundred sixteen".