172197124 has 24 divisors (see below), whose sum is σ = 329073696. Its totient is φ = 78192000.

The previous prime is 172197121. The next prime is 172197161. The reversal of 172197124 is 421791271.

It is a self number, because there is not a number n which added to its sum of digits gives 172197124.

It is not an unprimeable number, because it can be changed into a prime (172197121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78604 + ... + 80764.

It is an arithmetic number, because the mean of its divisors is an integer number (13711404).

Almost surely, 2^172197124 is an apocalyptic number.

It is an amenable number.

172197124 is a deficient number, since it is larger than the sum of its proper divisors (156876572).

172197124 is a wasteful number, since it uses less digits than its factorization.

172197124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3987 (or 3985 counting only the distinct ones).

The product of its digits is 7056, while the sum is 34.

The square root of 172197124 is about 13122.3901786222. The cubic root of 172197124 is about 556.3421500491.

The spelling of 172197124 in words is "one hundred seventy-two million, one hundred ninety-seven thousand, one hundred twenty-four".