126421648 has 10 divisors (see below), whose sum is σ = 244941974. Its totient is φ = 63210816.

The previous prime is 126421613. The next prime is 126421651. The reversal of 126421648 is 846124621.

It can be written as a sum of positive squares in only one way, i.e., 121616784 + 4804864 = 11028^2 + 2192^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3950661 + ... + 3950692.

Almost surely, 2^126421648 is an apocalyptic number.

It is an amenable number.

126421648 is a deficient number, since it is larger than the sum of its proper divisors (118520326).

126421648 is an equidigital number, since it uses as much as digits as its factorization.

126421648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7901361 (or 7901355 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 126421648 is about 11243.7381684207. The cubic root of 126421648 is about 501.8883896570. Note that the first 3 decimals are identical.

The spelling of 126421648 in words is "one hundred twenty-six million, four hundred twenty-one thousand, six hundred forty-eight".