126553423 has 4 divisors (see below), whose sum is σ = 133997760. Its totient is φ = 119109088.

The previous prime is 126553409. The next prime is 126553489. The reversal of 126553423 is 324355621.

It is a happy number.

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 126553423 - 2⁹ = 126552911 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 (126553403) 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, 3722143 + ... + 3722176.

It is an arithmetic number, because the mean of its divisors is an integer number (33499440).

Almost surely, 2^126553423 is an apocalyptic number.

126553423 is a deficient number, since it is larger than the sum of its proper divisors (7444337).

126553423 is an equidigital number, since it uses as much as digits as its factorization.

126553423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7444336.

The product of its digits is 21600, while the sum is 31.

The square root of 126553423 is about 11249.5965705442. The cubic root of 126553423 is about 502.0627094245.

The spelling of 126553423 in words is "one hundred twenty-six million, five hundred fifty-three thousand, four hundred twenty-three".