126505447 has 8 divisors (see below), whose sum is σ = 128984576. Its totient is φ = 124043832.

The previous prime is 126505411. The next prime is 126505469. The reversal of 126505447 is 744505621.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126505447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126505487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10708 + ... + 19174.

It is an arithmetic number, because the mean of its divisors is an integer number (16123072).

Almost surely, 2^126505447 is an apocalyptic number.

126505447 is a deficient number, since it is larger than the sum of its proper divisors (2479129).

126505447 is an equidigital number, since it uses as much as digits as its factorization.

126505447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8757.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 126505447 is about 11247.4640252814. The cubic root of 126505447 is about 501.9992579472. Note that the first 3 decimals are identical.

The spelling of 126505447 in words is "one hundred twenty-six million, five hundred five thousand, four hundred forty-seven".