126170198243 has 8 divisors (see below), whose sum is σ = 129007756800. Its totient is φ = 123363651528.

The previous prime is 126170198237. The next prime is 126170198263. The reversal of 126170198243 is 342891071621.

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 126170198243 - 2⁴ = 126170198227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126170198194 and 126170198203.

It is not an unprimeable number, because it can be changed into a prime (126170198263) 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, 7744733 + ... + 7761006.

It is an arithmetic number, because the mean of its divisors is an integer number (16125969600).

Almost surely, 2^126170198243 is an apocalyptic number.

126170198243 is a deficient number, since it is larger than the sum of its proper divisors (2837558557).

126170198243 is a wasteful number, since it uses less digits than its factorization.

126170198243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15505921.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 126170198243 in words is "one hundred twenty-six billion, one hundred seventy million, one hundred ninety-eight thousand, two hundred forty-three".