123572217 has 8 divisors (see below), whose sum is σ = 165489696. Its totient is φ = 82018112.

The previous prime is 123572191. The next prime is 123572227. The reversal of 123572217 is 712275321.

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 123572217 - 2¹¹ = 123570169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123572227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90048 + ... + 91409.

It is an arithmetic number, because the mean of its divisors is an integer number (20686212).

Almost surely, 2^123572217 is an apocalyptic number.

It is an amenable number.

123572217 is a deficient number, since it is larger than the sum of its proper divisors (41917479).

123572217 is a wasteful number, since it uses less digits than its factorization.

123572217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181687.

The product of its digits is 5880, while the sum is 30.

The square root of 123572217 is about 11116.3041070313. The cubic root of 123572217 is about 498.0889947564.

The spelling of 123572217 in words is "one hundred twenty-three million, five hundred seventy-two thousand, two hundred seventeen".