169742 has 4 divisors (see below), whose sum is σ = 254616. Its totient is φ = 84870.

The previous prime is 169733. The next prime is 169751. The reversal of 169742 is 247961.

169742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 247961 = 7 ⋅35423.

It is an interprime number because it is at equal distance from previous prime (169733) and next prime (169751).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

169742 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42434 + ... + 42437.

It is an arithmetic number, because the mean of its divisors is an integer number (63654).

2¹⁶⁹⁷⁴² is an apocalyptic number.

169742 is a deficient number, since it is larger than the sum of its proper divisors (84874).

169742 is an equidigital number, since it uses as much as digits as its factorization.

169742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84873.

The product of its digits is 3024, while the sum is 29.

The square root of 169742 is about 411.9975728084. The cubic root of 169742 is about 55.3685442251.

The spelling of 169742 in words is "one hundred sixty-nine thousand, seven hundred forty-two".