126336451 has 4 divisors (see below), whose sum is σ = 129274552. Its totient is φ = 123398352.

The previous prime is 126336443. The next prime is 126336481. The reversal of 126336451 is 154633621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126336451 - 2³ = 126336443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126336481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1468986 + ... + 1469071.

It is an arithmetic number, because the mean of its divisors is an integer number (32318638).

Almost surely, 2^126336451 is an apocalyptic number.

126336451 is a deficient number, since it is larger than the sum of its proper divisors (2938101).

126336451 is an equidigital number, since it uses as much as digits as its factorization.

126336451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938100.

The product of its digits is 12960, while the sum is 31.

The square root of 126336451 is about 11239.9488877841. The cubic root of 126336451 is about 501.7756215387.

The spelling of 126336451 in words is "one hundred twenty-six million, three hundred thirty-six thousand, four hundred fifty-one".