126444643 has 16 divisors (see below), whose sum is σ = 139116096. Its totient is φ = 114215040.

The previous prime is 126444631. The next prime is 126444649. The reversal of 126444643 is 346444621.

It is a cyclic number.

It is not a de Polignac number, because 126444643 - 2¹⁷ = 126313571 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126444599 and 126444608.

It is not an unprimeable number, because it can be changed into a prime (126444649) 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 15 ways as a sum of consecutive naturals, for example, 251130 + ... + 251632.

It is an arithmetic number, because the mean of its divisors is an integer number (8694756).

Almost surely, 2^126444643 is an apocalyptic number.

126444643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

126444643 is a deficient number, since it is larger than the sum of its proper divisors (12671453).

126444643 is a wasteful number, since it uses less digits than its factorization.

126444643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894.

The product of its digits is 55296, while the sum is 34.

The square root of 126444643 is about 11244.7606910952. The cubic root of 126444643 is about 501.9188175255.

The spelling of 126444643 in words is "one hundred twenty-six million, four hundred forty-four thousand, six hundred forty-three".