170123434 has 16 divisors (see below), whose sum is σ = 278582472. Its totient is φ = 77442048.

The previous prime is 170123431. The next prime is 170123453. The reversal of 170123434 is 434321071.

It can be written as a sum of positive squares in 4 ways, for example, as 75742209 + 94381225 = 8703^2 + 9715^2 .

It is a junction number, because it is equal to n+sod(n) for n = 170123399 and 170123408.

It is not an unprimeable number, because it can be changed into a prime (170123431) 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, 42919 + ... + 46714.

Almost surely, 2^170123434 is an apocalyptic number.

170123434 is a deficient number, since it is larger than the sum of its proper divisors (108459038).

170123434 is a wasteful number, since it uses less digits than its factorization.

170123434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89721.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 170123434 is about 13043.1374293151. The cubic root of 170123434 is about 554.0998681754.

The spelling of 170123434 in words is "one hundred seventy million, one hundred twenty-three thousand, four hundred thirty-four".