170142977 has 2 divisors, whose sum is σ = 170142978. Its totient is φ = 170142976.

The previous prime is 170142943. The next prime is 170142997. The reversal of 170142977 is 779241071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111175936 + 58967041 = 10544^2 + 7679^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-170142977 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 170142977.

It is not a weakly prime, because it can be changed into another prime (170142997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85071488 + 85071489.

It is an arithmetic number, because the mean of its divisors is an integer number (85071489).

Almost surely, 2^170142977 is an apocalyptic number.

It is an amenable number.

170142977 is a deficient number, since it is larger than the sum of its proper divisors (1).

170142977 is an equidigital number, since it uses as much as digits as its factorization.

170142977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696, while the sum is 38.

The square root of 170142977 is about 13043.8865757105. The cubic root of 170142977 is about 554.1210848470.

It can be divided in two parts, 17014 and 2977, that added together give a palindrome (19991).

The spelling of 170142977 in words is "one hundred seventy million, one hundred forty-two thousand, nine hundred seventy-seven".