126403311232 has 64 divisors (see below), whose sum is σ = 290871311040. Its totient is φ = 54076272640.

The previous prime is 126403311173. The next prime is 126403311253. The reversal of 126403311232 is 232113304621.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 126403311232.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2616508 + ... + 2664379.

It is an arithmetic number, because the mean of its divisors is an integer number (4544864235).

Almost surely, 2^126403311232 is an apocalyptic number.

It is an amenable number.

126403311232 is an abundant number, since it is smaller than the sum of its proper divisors (164467999808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126403311232 is a wasteful number, since it uses less digits than its factorization.

126403311232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5280929 (or 5280917 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 126403311232 its reverse (232113304621), we get a palindrome (358516615853).

The spelling of 126403311232 in words is "one hundred twenty-six billion, four hundred three million, three hundred eleven thousand, two hundred thirty-two".