172303642 has 16 divisors (see below), whose sum is σ = 304906752. Its totient is φ = 71462160.

The previous prime is 172303639. The next prime is 172303679. The reversal of 172303642 is 246303271.

It is a super-3 number, since 3×172303642³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 172303642.

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 in 7 ways as a sum of consecutive naturals, for example, 198073 + ... + 198940.

It is an arithmetic number, because the mean of its divisors is an integer number (19056672).

Almost surely, 2^172303642 is an apocalyptic number.

172303642 is a deficient number, since it is larger than the sum of its proper divisors (132603110).

172303642 is a wasteful number, since it uses less digits than its factorization.

172303642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397053.

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

The square root of 172303642 is about 13126.4481867716. The cubic root of 172303642 is about 556.4568407726.

The spelling of 172303642 in words is "one hundred seventy-two million, three hundred three thousand, six hundred forty-two".