126403035321 has 4 divisors (see below), whose sum is σ = 168537380432. Its totient is φ = 84268690212.

The previous prime is 126403035307. The next prime is 126403035323. The reversal of 126403035321 is 123530304621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 126403035321 - 2⁶ = 126403035257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126403035323) 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, 21067172551 + ... + 21067172556.

It is an arithmetic number, because the mean of its divisors is an integer number (42134345108).

Almost surely, 2^126403035321 is an apocalyptic number.

It is an amenable number.

126403035321 is a deficient number, since it is larger than the sum of its proper divisors (42134345111).

126403035321 is an equidigital number, since it uses as much as digits as its factorization.

126403035321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42134345110.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 126403035321 its reverse (123530304621), we get a palindrome (249933339942).

The spelling of 126403035321 in words is "one hundred twenty-six billion, four hundred three million, thirty-five thousand, three hundred twenty-one".