126243361 has 4 divisors (see below), whose sum is σ = 126785412. Its totient is φ = 125701312.

The previous prime is 126243331. The next prime is 126243373. The reversal of 126243361 is 163342621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89870400 + 36372961 = 9480^2 + 6031^2 .

It is a cyclic number.

It is not a de Polignac number, because 126243361 - 2⁵ = 126243329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126243301) 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 3 ways as a sum of consecutive naturals, for example, 270676 + ... + 271141.

It is an arithmetic number, because the mean of its divisors is an integer number (31696353).

Almost surely, 2^126243361 is an apocalyptic number.

It is an amenable number.

126243361 is a deficient number, since it is larger than the sum of its proper divisors (542051).

126243361 is an equidigital number, since it uses as much as digits as its factorization.

126243361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542050.

The product of its digits is 5184, while the sum is 28.

The square root of 126243361 is about 11235.8070916156. The cubic root of 126243361 is about 501.6523481428.

Adding to 126243361 its reverse (163342621), we get a palindrome (289585982).

The spelling of 126243361 in words is "one hundred twenty-six million, two hundred forty-three thousand, three hundred sixty-one".