172538742 has 16 divisors (see below), whose sum is σ = 353494512. Its totient is φ = 56110080.

The previous prime is 172538713. The next prime is 172538767. The reversal of 172538742 is 247835271.

It is a self number, because there is not a number n which added to its sum of digits gives 172538742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350443 + ... + 350934.

It is an arithmetic number, because the mean of its divisors is an integer number (22093407).

Almost surely, 2^172538742 is an apocalyptic number.

172538742 is an abundant number, since it is smaller than the sum of its proper divisors (180955770).

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

172538742 is a wasteful number, since it uses less digits than its factorization.

172538742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701423.

The product of its digits is 94080, while the sum is 39.

The square root of 172538742 is about 13135.4003364953. The cubic root of 172538742 is about 556.7098119156.

The spelling of 172538742 in words is "one hundred seventy-two million, five hundred thirty-eight thousand, seven hundred forty-two".