126023243 has 4 divisors (see below), whose sum is σ = 127015680. Its totient is φ = 125030808.

The previous prime is 126023231. The next prime is 126023251. The reversal of 126023243 is 342320621.

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 126023243 - 2¹⁰ = 126022219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126023213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496028 + ... + 496281.

It is an arithmetic number, because the mean of its divisors is an integer number (31753920).

Almost surely, 2^126023243 is an apocalyptic number.

126023243 is a deficient number, since it is larger than the sum of its proper divisors (992437).

126023243 is an equidigital number, since it uses as much as digits as its factorization.

126023243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992436.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 126023243 is about 11226.0074380877. The cubic root of 126023243 is about 501.3606180784.

Adding to 126023243 its reverse (342320621), we get a palindrome (468343864).

The spelling of 126023243 in words is "one hundred twenty-six million, twenty-three thousand, two hundred forty-three".