126456643 has 8 divisors (see below), whose sum is σ = 128494080. Its totient is φ = 124430280.

The previous prime is 126456641. The next prime is 126456653. The reversal of 126456643 is 346654621.

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 126456643 - 2¹ = 126456641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126456641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21996 + ... + 27142.

It is an arithmetic number, because the mean of its divisors is an integer number (16061760).

Almost surely, 2^126456643 is an apocalyptic number.

126456643 is a deficient number, since it is larger than the sum of its proper divisors (2037437).

126456643 is an equidigital number, since it uses as much as digits as its factorization.

126456643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5537.

The product of its digits is 103680, while the sum is 37.

The square root of 126456643 is about 11245.2942602673. The cubic root of 126456643 is about 501.9346949223.

The spelling of 126456643 in words is "one hundred twenty-six million, four hundred fifty-six thousand, six hundred forty-three".