126456656 has 10 divisors (see below), whose sum is σ = 245009802. Its totient is φ = 63228320.

The previous prime is 126456653. The next prime is 126456683. The reversal of 126456656 is 656654621.

It can be written as a sum of positive squares in only one way, i.e., 104366656 + 22090000 = 10216^2 + 4700^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126456653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3951755 + ... + 3951786.

Almost surely, 2^126456656 is an apocalyptic number.

126456656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

126456656 is a deficient number, since it is larger than the sum of its proper divisors (118553146).

126456656 is an equidigital number, since it uses as much as digits as its factorization.

126456656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7903549 (or 7903543 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 126456656 is about 11245.2948382868. The cubic root of 126456656 is about 501.9347121222.

The spelling of 126456656 in words is "one hundred twenty-six million, four hundred fifty-six thousand, six hundred fifty-six".