1298242178 has 8 divisors (see below), whose sum is σ = 1988796672. Its totient is φ = 635309956.

The previous prime is 1298242157. The next prime is 1298242201. The reversal of 1298242178 is 8712428921.

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6905450 + ... + 6905637.

It is an arithmetic number, because the mean of its divisors is an integer number (248599584).

Almost surely, 2^1298242178 is an apocalyptic number.

1298242178 is a deficient number, since it is larger than the sum of its proper divisors (690554494).

1298242178 is a wasteful number, since it uses less digits than its factorization.

1298242178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13811136.

The product of its digits is 129024, while the sum is 44.

The square root of 1298242178 is about 36031.1279035225. The cubic root of 1298242178 is about 1090.9007446579.

The spelling of 1298242178 in words is "one billion, two hundred ninety-eight million, two hundred forty-two thousand, one hundred seventy-eight".