9142172 has 12 divisors (see below), whose sum is σ = 17229576. Its totient is φ = 4219440.

The previous prime is 9142171. The next prime is 9142207. The reversal of 9142172 is 2712419.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9142171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87854 + ... + 87957.

It is an arithmetic number, because the mean of its divisors is an integer number (1435798).

Almost surely, 2^9142172 is an apocalyptic number.

It is an amenable number.

9142172 is a deficient number, since it is larger than the sum of its proper divisors (8087404).

9142172 is a wasteful number, since it uses less digits than its factorization.

9142172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175828 (or 175826 counting only the distinct ones).

The product of its digits is 1008, while the sum is 26.

The square root of 9142172 is about 3023.6024871004. The cubic root of 9142172 is about 209.0979600761.

The spelling of 9142172 in words is "nine million, one hundred forty-two thousand, one hundred seventy-two".