126126644 has 24 divisors (see below), whose sum is σ = 257015808. Its totient is φ = 53033760.

The previous prime is 126126613. The next prime is 126126653. The reversal of 126126644 is 446621621.

It is a self number, because there is not a number n which added to its sum of digits gives 126126644.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 41012 + ... + 43979.

It is an arithmetic number, because the mean of its divisors is an integer number (10708992).

Almost surely, 2^126126644 is an apocalyptic number.

126126644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

126126644 is an abundant number, since it is smaller than the sum of its proper divisors (130889164).

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

126126644 is a wasteful number, since it uses less digits than its factorization.

126126644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85055 (or 85053 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 126126644 is about 11230.6119156527. The cubic root of 126126644 is about 501.4977013023.

The spelling of 126126644 in words is "one hundred twenty-six million, one hundred twenty-six thousand, six hundred forty-four".