126261644 has 6 divisors (see below), whose sum is σ = 220957884. Its totient is φ = 63130820.

The previous prime is 126261637. The next prime is 126261647. The reversal of 126261644 is 446162621.

It is a self number, because there is not a number n which added to its sum of digits gives 126261644.

It is not an unprimeable number, because it can be changed into a prime (126261647) 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 as a sum of consecutive naturals, namely, 15782702 + ... + 15782709.

It is an arithmetic number, because the mean of its divisors is an integer number (36826314).

Almost surely, 2^126261644 is an apocalyptic number.

It is an amenable number.

126261644 is a deficient number, since it is larger than the sum of its proper divisors (94696240).

126261644 is a wasteful number, since it uses less digits than its factorization.

126261644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31565415 (or 31565413 counting only the distinct ones).

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

The square root of 126261644 is about 11236.6206663747. The cubic root of 126261644 is about 501.6765639830.

The spelling of 126261644 in words is "one hundred twenty-six million, two hundred sixty-one thousand, six hundred forty-four".