172161742 has 8 divisors (see below), whose sum is σ = 259371000. Its totient is φ = 85704744.

The previous prime is 172161727. The next prime is 172161751. The reversal of 172161742 is 247161271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187492 + ... + 188407.

It is an arithmetic number, because the mean of its divisors is an integer number (32421375).

Almost surely, 2^172161742 is an apocalyptic number.

172161742 is a deficient number, since it is larger than the sum of its proper divisors (87209258).

172161742 is a wasteful number, since it uses less digits than its factorization.

172161742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376130.

The product of its digits is 4704, while the sum is 31.

The square root of 172161742 is about 13121.0419555765. The cubic root of 172161742 is about 556.3040428577.

The spelling of 172161742 in words is "one hundred seventy-two million, one hundred sixty-one thousand, seven hundred forty-two".