171742804 has 6 divisors (see below), whose sum is σ = 300549914. Its totient is φ = 85871400.

The previous prime is 171742801. The next prime is 171742819. The reversal of 171742804 is 408247171.

It can be written as a sum of positive squares in only one way, i.e., 102819600 + 68923204 = 10140^2 + 8302^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 171742804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171742801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21467847 + ... + 21467854.

Almost surely, 2^171742804 is an apocalyptic number.

It is an amenable number.

171742804 is a deficient number, since it is larger than the sum of its proper divisors (128807110).

171742804 is a wasteful number, since it uses less digits than its factorization.

171742804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42935705 (or 42935703 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 171742804 is about 13105.0678746812. The cubic root of 171742804 is about 555.8524400094.

Adding to 171742804 its reverse (408247171), we get a palindrome (579989975).

It can be divided in two parts, 1717 and 42804, that added together give a square (44521 = 211²).

The spelling of 171742804 in words is "one hundred seventy-one million, seven hundred forty-two thousand, eight hundred four".