126912218 has 8 divisors (see below), whose sum is σ = 190969812. Its totient is φ = 63255616.

The previous prime is 126912217. The next prime is 126912239. The reversal of 126912218 is 812219621.

It can be written as a sum of positive squares in 2 ways, for example, as 94342369 + 32569849 = 9713^2 + 5707^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×126912218² = 32213422155359048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126912211) 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, 99455 + ... + 100722.

Almost surely, 2^126912218 is an apocalyptic number.

126912218 is a deficient number, since it is larger than the sum of its proper divisors (64057594).

126912218 is a wasteful number, since it uses less digits than its factorization.

126912218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200496.

The product of its digits is 3456, while the sum is 32.

The square root of 126912218 is about 11265.5322998960. The cubic root of 126912218 is about 502.5367322142.

The spelling of 126912218 in words is "one hundred twenty-six million, nine hundred twelve thousand, two hundred eighteen".