169123201 has 12 divisors (see below), whose sum is σ = 184833660. Its totient is φ = 154664640.

The previous prime is 169123183. The next prime is 169123217. The reversal of 169123201 is 102321961.

It can be written as a sum of positive squares in 6 ways, for example, as 7706176 + 161417025 = 2776^2 + 12705^2 .

It is not a de Polignac number, because 169123201 - 2⁹ = 169122689 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169123231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13831 + ... + 23011.

It is an arithmetic number, because the mean of its divisors is an integer number (15402805).

Almost surely, 2^169123201 is an apocalyptic number.

It is an amenable number.

169123201 is a deficient number, since it is larger than the sum of its proper divisors (15710459).

169123201 is a wasteful number, since it uses less digits than its factorization.

169123201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9316 (or 9303 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 169123201 is about 13004.7376367230. The cubic root of 169123201 is about 553.0117979622.

It can be divided in two parts, 169 and 123201, that multiplied together give a square (20820969 = 4563²).

The spelling of 169123201 in words is "one hundred sixty-nine million, one hundred twenty-three thousand, two hundred one".