126605472839 has 4 divisors (see below), whose sum is σ = 127017868824. Its totient is φ = 126193076856.

The previous prime is 126605472817. The next prime is 126605472853. The reversal of 126605472839 is 938274506621.

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 126605472839 - 2⁸ = 126605472583 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 (126605472809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206197532 + ... + 206198145.

It is an arithmetic number, because the mean of its divisors is an integer number (31754467206).

It is a 2-persistent number, because it is pandigital, and so is 2⋅126605472839 = 253210945678, but 3⋅126605472839 = 379816418517 is not.

Almost surely, 2^126605472839 is an apocalyptic number.

126605472839 is a deficient number, since it is larger than the sum of its proper divisors (412395985).

126605472839 is an equidigital number, since it uses as much as digits as its factorization.

126605472839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412395984.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 126605472839 in words is "one hundred twenty-six billion, six hundred five million, four hundred seventy-two thousand, eight hundred thirty-nine".