126636218 has 8 divisors (see below), whose sum is σ = 190126848. Its totient is φ = 63260604.

The previous prime is 126636193. The next prime is 126636221. The reversal of 126636218 is 812636621.

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

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 3 ways as a sum of consecutive naturals, for example, 25946 + ... + 30437.

It is an arithmetic number, because the mean of its divisors is an integer number (23765856).

Almost surely, 2^126636218 is an apocalyptic number.

126636218 is a deficient number, since it is larger than the sum of its proper divisors (63490630).

126636218 is a wasteful number, since it uses less digits than its factorization.

126636218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57508.

The product of its digits is 20736, while the sum is 35.

The square root of 126636218 is about 11253.2758786053. The cubic root of 126636218 is about 502.1721736578.

It can be divided in two parts, 12663 and 6218, that added together give a palindrome (18881).

The spelling of 126636218 in words is "one hundred twenty-six million, six hundred thirty-six thousand, two hundred eighteen".