169402 has 4 divisors (see below), whose sum is σ = 254106. Its totient is φ = 84700.

The previous prime is 169399. The next prime is 169409. The reversal of 169402 is 204961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204961 = 97 ⋅2113.

It can be written as a sum of positive squares in only one way, i.e., 159201 + 10201 = 399^2 + 101^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (169409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42349 + ... + 42352.

2¹⁶⁹⁴⁰² is an apocalyptic number.

169402 is a deficient number, since it is larger than the sum of its proper divisors (84704).

169402 is an equidigital number, since it uses as much as digits as its factorization.

169402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84703.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 169402 is about 411.5847421856. The cubic root of 169402 is about 55.3315510466.

The spelling of 169402 in words is "one hundred sixty-nine thousand, four hundred two".