126406230847321 has 4 divisors (see below), whose sum is σ = 129345910634512. Its totient is φ = 123466551060132.

The previous prime is 126406230847313. The next prime is 126406230847363. The reversal of 126406230847321 is 123748032604621.

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 a cyclic number.

It is not a de Polignac number, because 126406230847321 - 2³ = 126406230847313 is a prime.

It is a super-2 number, since 2×126406230847321² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126406230847381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1469839893531 + ... + 1469839893616.

It is an arithmetic number, because the mean of its divisors is an integer number (32336477658628).

Almost surely, 2^{126406230847321} is an apocalyptic number.

It is an amenable number.

126406230847321 is a deficient number, since it is larger than the sum of its proper divisors (2939679787191).

126406230847321 is an equidigital number, since it uses as much as digits as its factorization.

126406230847321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939679787190.

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 126406230847321 in words is "one hundred twenty-six trillion, four hundred six billion, two hundred thirty million, eight hundred forty-seven thousand, three hundred twenty-one".