171551042 has 8 divisors (see below), whose sum is σ = 277120956. Its totient is φ = 79177392.

The previous prime is 171551033. The next prime is 171551053. The reversal of 171551042 is 240155171.

It can be written as a sum of positive squares in 2 ways, for example, as 170276401 + 1274641 = 13049^2 + 1129^2 .

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

It is a super-2 number, since 2×171551042² = 58859520022571528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 6598117 = 171551042 / (1 + 7 + 1 + 5 + 5 + 1 + 0 + 4 + 2).

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, 3299033 + ... + 3299084.

Almost surely, 2^171551042 is an apocalyptic number.

171551042 is a deficient number, since it is larger than the sum of its proper divisors (105569914).

171551042 is a wasteful number, since it uses less digits than its factorization.

171551042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6598132.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 171551042 is about 13097.7495013456. The cubic root of 171551042 is about 555.6454811737.

The spelling of 171551042 in words is "one hundred seventy-one million, five hundred fifty-one thousand, forty-two".