171442120 has 16 divisors (see below), whose sum is σ = 385744860. Its totient is φ = 68576832.

The previous prime is 171442097. The next prime is 171442123. The reversal of 171442120 is 21244171.

It can be written as a sum of positive squares in 2 ways, for example, as 169052004 + 2390116 = 13002^2 + 1546^2 .

It is a super-5 number, since 5×171442120⁵ (a number of 42 digits) contains 55555 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 171442091 and 171442100.

It is not an unprimeable number, because it can be changed into a prime (171442123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2142987 + ... + 2143066.

Almost surely, 2^171442120 is an apocalyptic number.

171442120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171442120 is an abundant number, since it is smaller than the sum of its proper divisors (214302740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171442120 is a wasteful number, since it uses less digits than its factorization.

171442120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4286064 (or 4286060 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 171442120 is about 13093.5907985548. The cubic root of 171442120 is about 555.5278585896.

Adding to 171442120 its reverse (21244171), we get a palindrome (192686291).

It can be divided in two parts, 1714 and 42120, that added together give a palindrome (43834).

The spelling of 171442120 in words is "one hundred seventy-one million, four hundred forty-two thousand, one hundred twenty".