126216516 has 12 divisors (see below), whose sum is σ = 294505232. Its totient is φ = 42072168.

The previous prime is 126216511. The next prime is 126216529. The reversal of 126216516 is 615612621.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×126216516² = 31861217822356512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126216511) 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, 5259010 + ... + 5259033.

Almost surely, 2^126216516 is an apocalyptic number.

It is an amenable number.

126216516 is an abundant number, since it is smaller than the sum of its proper divisors (168288716).

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

126216516 is a wasteful number, since it uses less digits than its factorization.

126216516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10518050 (or 10518048 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 126216516 is about 11234.6124098698. The cubic root of 126216516 is about 501.6167876934.

The spelling of 126216516 in words is "one hundred twenty-six million, two hundred sixteen thousand, five hundred sixteen".