126644243 has 8 divisors (see below), whose sum is σ = 138559680. Its totient is φ = 114795880.

The previous prime is 126644239. The next prime is 126644251. The reversal of 126644243 is 342446621.

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 126644243 - 2² = 126644239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126644213) 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, 12773 + ... + 20406.

It is an arithmetic number, because the mean of its divisors is an integer number (17319960).

Almost surely, 2^126644243 is an apocalyptic number.

126644243 is a deficient number, since it is larger than the sum of its proper divisors (11915437).

126644243 is a wasteful number, since it uses less digits than its factorization.

126644243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33537.

The product of its digits is 27648, while the sum is 32.

The square root of 126644243 is about 11253.6324357960. The cubic root of 126644243 is about 502.1827810670.

The spelling of 126644243 in words is "one hundred twenty-six million, six hundred forty-four thousand, two hundred forty-three".