172036342 has 4 divisors (see below), whose sum is σ = 258054516. Its totient is φ = 86018170.

The previous prime is 172036339. The next prime is 172036351. The reversal of 172036342 is 243630271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 243630271 = 31 ⋅7859041.

It is a self number, because there is not a number n which added to its sum of digits gives 172036342.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43009084 + ... + 43009087.

It is an arithmetic number, because the mean of its divisors is an integer number (64513629).

Almost surely, 2^172036342 is an apocalyptic number.

172036342 is a deficient number, since it is larger than the sum of its proper divisors (86018174).

172036342 is an equidigital number, since it uses as much as digits as its factorization.

172036342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86018173.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 172036342 is about 13116.2625011853. The cubic root of 172036342 is about 556.1689422433.

The spelling of 172036342 in words is "one hundred seventy-two million, thirty-six thousand, three hundred forty-two".