126127656 has 24 divisors (see below), whose sum is σ = 341595930. Its totient is φ = 42042528.

The previous prime is 126127621. The next prime is 126127657. The reversal of 126127656 is 656721621.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 66683556 + 59444100 = 8166^2 + 7710^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 126127656.

It is not an unprimeable number, because it can be changed into a prime (126127657) 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 5 ways as a sum of consecutive naturals, for example, 875815 + ... + 875958.

Almost surely, 2^126127656 is an apocalyptic number.

It is an amenable number.

126127656 is an abundant number, since it is smaller than the sum of its proper divisors (215468274).

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

126127656 is a wasteful number, since it uses less digits than its factorization.

126127656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751785 (or 1751778 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 126127656 is about 11230.6569709879. The cubic root of 126127656 is about 501.4990425846.

The spelling of 126127656 in words is "one hundred twenty-six million, one hundred twenty-seven thousand, six hundred fifty-six".