126004432921 has 8 divisors (see below), whose sum is σ = 132820732800. Its totient is φ = 119206581840.

The previous prime is 126004432913. The next prime is 126004433047. The reversal of 126004432921 is 129234400621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126004432921 - 2³ = 126004432913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126004432321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4598170 + ... + 4625491.

It is an arithmetic number, because the mean of its divisors is an integer number (16602591600).

Almost surely, 2^126004432921 is an apocalyptic number.

It is an amenable number.

126004432921 is a deficient number, since it is larger than the sum of its proper divisors (6816299879).

126004432921 is an equidigital number, since it uses as much as digits as its factorization.

126004432921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9224399.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 126004432921 in words is "one hundred twenty-six billion, four million, four hundred thirty-two thousand, nine hundred twenty-one".