123161198 has 8 divisors (see below), whose sum is σ = 184924080. Its totient is φ = 61519840.

The previous prime is 123161189. The next prime is 123161239. The reversal of 123161198 is 891161321.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27803 + ... + 31926.

It is an arithmetic number, because the mean of its divisors is an integer number (23115510).

Almost surely, 2^123161198 is an apocalyptic number.

123161198 is a deficient number, since it is larger than the sum of its proper divisors (61762882).

123161198 is a wasteful number, since it uses less digits than its factorization.

123161198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60762.

The product of its digits is 2592, while the sum is 32.

The square root of 123161198 is about 11097.8014939897. The cubic root of 123161198 is about 497.5361427577.

The spelling of 123161198 in words is "one hundred twenty-three million, one hundred sixty-one thousand, one hundred ninety-eight".