972198123 has 8 divisors (see below), whose sum is σ = 1395976848. Its totient is φ = 598275744.

The previous prime is 972198121. The next prime is 972198127. The reversal of 972198123 is 321891279.

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

It is not a de Polignac number, because 972198123 - 2¹ = 972198121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (972198121) 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, 12464040 + ... + 12464117.

It is an arithmetic number, because the mean of its divisors is an integer number (174497106).

Almost surely, 2^972198123 is an apocalyptic number.

972198123 is a deficient number, since it is larger than the sum of its proper divisors (423778725).

972198123 is a wasteful number, since it uses less digits than its factorization.

972198123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24928173.

The product of its digits is 54432, while the sum is 42.

The square root of 972198123 is about 31180.0917734377. The cubic root of 972198123 is about 990.6454733607.

The spelling of 972198123 in words is "nine hundred seventy-two million, one hundred ninety-eight thousand, one hundred twenty-three".