171489142 has 16 divisors (see below), whose sum is σ = 287464464. Its totient is φ = 76048000.

The previous prime is 171489121. The next prime is 171489163. The reversal of 171489142 is 241984171.

It is an interprime number because it is at equal distance from previous prime (171489121) and next prime (171489163).

It is a congruent number.

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, 94159 + ... + 95962.

It is an arithmetic number, because the mean of its divisors is an integer number (17966529).

Almost surely, 2^171489142 is an apocalyptic number.

171489142 is a deficient number, since it is larger than the sum of its proper divisors (115975322).

171489142 is a wasteful number, since it uses less digits than its factorization.

171489142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190175.

The product of its digits is 16128, while the sum is 37.

The square root of 171489142 is about 13095.3862867805. The cubic root of 171489142 is about 555.5786427709.

The spelling of 171489142 in words is "one hundred seventy-one million, four hundred eighty-nine thousand, one hundred forty-two".