169242473 has 4 divisors (see below), whose sum is σ = 170740308. Its totient is φ = 167744640.

The previous prime is 169242449. The next prime is 169242499. The reversal of 169242473 is 374242961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 374242961 = 12959 ⋅28879.

It can be written as a sum of positive squares in 2 ways, for example, as 59474944 + 109767529 = 7712^2 + 10477^2 .

It is a cyclic number.

It is not a de Polignac number, because 169242473 - 2¹⁴ = 169226089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169242413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 748748 + ... + 748973.

It is an arithmetic number, because the mean of its divisors is an integer number (42685077).

Almost surely, 2^169242473 is an apocalyptic number.

It is an amenable number.

169242473 is a deficient number, since it is larger than the sum of its proper divisors (1497835).

169242473 is a wasteful number, since it uses less digits than its factorization.

169242473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497834.

The product of its digits is 72576, while the sum is 38.

The square root of 169242473 is about 13009.3225419312. The cubic root of 169242473 is about 553.1417689406.

The spelling of 169242473 in words is "one hundred sixty-nine million, two hundred forty-two thousand, four hundred seventy-three".