126126618 has 32 divisors (see below), whose sum is σ = 263786112. Its totient is φ = 40128000.

The previous prime is 126126613. The next prime is 126126653. The reversal of 126126618 is 816621621.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126126613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104418 + ... + 105618.

It is an arithmetic number, because the mean of its divisors is an integer number (8243316).

Almost surely, 2^126126618 is an apocalyptic number.

126126618 is an abundant number, since it is smaller than the sum of its proper divisors (137659494).

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

126126618 is a wasteful number, since it uses less digits than its factorization.

126126618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990.

The product of its digits is 6912, while the sum is 33.

The square root of 126126618 is about 11230.6107581022. The cubic root of 126126618 is about 501.4976668424.

The spelling of 126126618 in words is "one hundred twenty-six million, one hundred twenty-six thousand, six hundred eighteen".