126501449 has 8 divisors (see below), whose sum is σ = 138949440. Its totient is φ = 114632496.

The previous prime is 126501391. The next prime is 126501457. The reversal of 126501449 is 944105621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126501449 - 2¹² = 126497353 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126503449) 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 7 ways as a sum of consecutive naturals, for example, 144302 + ... + 145175.

It is an arithmetic number, because the mean of its divisors is an integer number (17368680).

Almost surely, 2^126501449 is an apocalyptic number.

126501449 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

126501449 is a deficient number, since it is larger than the sum of its proper divisors (12447991).

126501449 is a wasteful number, since it uses less digits than its factorization.

126501449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289519.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 126501449 is about 11247.2862949247. The cubic root of 126501449 is about 501.9939696000.

The spelling of 126501449 in words is "one hundred twenty-six million, five hundred one thousand, four hundred forty-nine".