126123263 has 16 divisors (see below), whose sum is σ = 147164160. Its totient is φ = 105861600.

The previous prime is 126123227. The next prime is 126123271. The reversal of 126123263 is 362321621.

It is a cyclic number.

It is not a de Polignac number, because 126123263 - 2¹⁶ = 126057727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126123293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71573 + ... + 73313.

It is an arithmetic number, because the mean of its divisors is an integer number (9197760).

Almost surely, 2^126123263 is an apocalyptic number.

126123263 is a deficient number, since it is larger than the sum of its proper divisors (21040897).

126123263 is a wasteful number, since it uses less digits than its factorization.

126123263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958.

The product of its digits is 2592, while the sum is 26.

The square root of 126123263 is about 11230.4613885628. The cubic root of 126123263 is about 501.4932201479.

Adding to 126123263 its reverse (362321621), we get a palindrome (488444884).

The spelling of 126123263 in words is "one hundred twenty-six million, one hundred twenty-three thousand, two hundred sixty-three".