172339542 has 32 divisors (see below), whose sum is σ = 384104160. Its totient is φ = 57277440.

The previous prime is 172339537. The next prime is 172339549. The reversal of 172339542 is 245933271.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 172339497 and 172339506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172339549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14542 + ... + 23582.

It is an arithmetic number, because the mean of its divisors is an integer number (12003255).

Almost surely, 2^172339542 is an apocalyptic number.

172339542 is an abundant number, since it is smaller than the sum of its proper divisors (211764618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172339542 is a wasteful number, since it uses less digits than its factorization.

172339542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9405 (or 9399 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 172339542 is about 13127.8155837138. The cubic root of 172339542 is about 556.4954845937.

The spelling of 172339542 in words is "one hundred seventy-two million, three hundred thirty-nine thousand, five hundred forty-two".