123119998 has 4 divisors (see below), whose sum is σ = 184680000. Its totient is φ = 61559998.

The previous prime is 123119963. The next prime is 123120013. The reversal of 123119998 is 899911321.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 30779998 + ... + 30780001.

It is an arithmetic number, because the mean of its divisors is an integer number (46170000).

Almost surely, 2^123119998 is an apocalyptic number.

123119998 is a deficient number, since it is larger than the sum of its proper divisors (61560002).

123119998 is an equidigital number, since it uses as much as digits as its factorization.

123119998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61560001.

The product of its digits is 34992, while the sum is 43.

The square root of 123119998 is about 11095.9451152211. The cubic root of 123119998 is about 497.4806578172.

The spelling of 123119998 in words is "one hundred twenty-three million, one hundred nineteen thousand, nine hundred ninety-eight".