171428942 has 8 divisors (see below), whose sum is σ = 258267000. Its totient is φ = 85339944.

The previous prime is 171428927. The next prime is 171428981. The reversal of 171428942 is 249824171.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 171428896 and 171428905.

It is a congruent number.

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, 186692 + ... + 187607.

It is an arithmetic number, because the mean of its divisors is an integer number (32283375).

Almost surely, 2^171428942 is an apocalyptic number.

171428942 is a deficient number, since it is larger than the sum of its proper divisors (86838058).

171428942 is a wasteful number, since it uses less digits than its factorization.

171428942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374530.

The product of its digits is 32256, while the sum is 38.

The square root of 171428942 is about 13093.0875655821. The cubic root of 171428942 is about 555.5136245657.

The spelling of 171428942 in words is "one hundred seventy-one million, four hundred twenty-eight thousand, nine hundred forty-two".