126780064 has 12 divisors (see below), whose sum is σ = 249598314. Its totient is φ = 63390016.

The previous prime is 126780061. The next prime is 126780091. The reversal of 126780064 is 460087621.

It can be written as a sum of positive squares in only one way, i.e., 82955664 + 43824400 = 9108^2 + 6620^2 .

It is not an unprimeable number, because it can be changed into a prime (126780061) 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 as a sum of consecutive naturals, namely, 1980907 + ... + 1980970.

Almost surely, 2^126780064 is an apocalyptic number.

It is an amenable number.

126780064 is a deficient number, since it is larger than the sum of its proper divisors (122818250).

126780064 is an equidigital number, since it uses as much as digits as its factorization.

126780064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3961887 (or 3961879 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 126780064 is about 11259.6653591481. The cubic root of 126780064 is about 502.3622407285.

The spelling of 126780064 in words is "one hundred twenty-six million, seven hundred eighty thousand, sixty-four".