170427138 has 16 divisors (see below), whose sum is σ = 389547840. Its totient is φ = 48693456.

The previous prime is 170427133. The next prime is 170427167. The reversal of 170427138 is 831724071.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 170427099 and 170427108.

It is not an unprimeable number, because it can be changed into a prime (170427133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2028853 + ... + 2028936.

It is an arithmetic number, because the mean of its divisors is an integer number (24346740).

Almost surely, 2^170427138 is an apocalyptic number.

170427138 is an abundant number, since it is smaller than the sum of its proper divisors (219120702).

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

170427138 is a wasteful number, since it uses less digits than its factorization.

170427138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4057801.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 170427138 is about 13054.7745288841. The cubic root of 170427138 is about 554.4293981379.

The spelling of 170427138 in words is "one hundred seventy million, four hundred twenty-seven thousand, one hundred thirty-eight".