126042223 has 4 divisors (see below), whose sum is σ = 127560888. Its totient is φ = 124523560.

The previous prime is 126042221. The next prime is 126042247. The reversal of 126042223 is 322240621.

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

It is a cyclic number.

It is not a de Polignac number, because 126042223 - 2¹ = 126042221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126042194 and 126042203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126042221) 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 3 ways as a sum of consecutive naturals, for example, 759208 + ... + 759373.

It is an arithmetic number, because the mean of its divisors is an integer number (31890222).

Almost surely, 2^126042223 is an apocalyptic number.

126042223 is a deficient number, since it is larger than the sum of its proper divisors (1518665).

126042223 is an equidigital number, since it uses as much as digits as its factorization.

126042223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518664.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 126042223 is about 11226.8527646888. The cubic root of 126042223 is about 501.3857863109.

Adding to 126042223 its reverse (322240621), we get a palindrome (448282844).

The spelling of 126042223 in words is "one hundred twenty-six million, forty-two thousand, two hundred twenty-three".