172024642 has 16 divisors (see below), whose sum is σ = 266694912. Its totient is φ = 83133360.

The previous prime is 172024603. The next prime is 172024661. The reversal of 172024642 is 246420271.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 172024642.

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, 75573 + ... + 77815.

It is an arithmetic number, because the mean of its divisors is an integer number (16668432).

Almost surely, 2^172024642 is an apocalyptic number.

172024642 is a deficient number, since it is larger than the sum of its proper divisors (94670270).

172024642 is a wasteful number, since it uses less digits than its factorization.

172024642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3513.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 172024642 is about 13115.8164824002. The cubic root of 172024642 is about 556.1563338141.

It can be divided in two parts, 1720 and 24642, that added together give a palindrome (26362).

The spelling of 172024642 in words is "one hundred seventy-two million, twenty-four thousand, six hundred forty-two".