169142450 has 12 divisors (see below), whose sum is σ = 314605050. Its totient is φ = 67656960.

The previous prime is 169142431. The next prime is 169142459. The reversal of 169142450 is 54241961.

It can be written as a sum of positive squares in 3 ways, for example, as 118831801 + 50310649 = 10901^2 + 7093^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (169142459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1691375 + ... + 1691474.

Almost surely, 2^169142450 is an apocalyptic number.

169142450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

169142450 is a deficient number, since it is larger than the sum of its proper divisors (145462600).

169142450 is a wasteful number, since it uses less digits than its factorization.

169142450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3382861 (or 3382856 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 169142450 is about 13005.4776921111. The cubic root of 169142450 is about 553.0327777769.

The spelling of 169142450 in words is "one hundred sixty-nine million, one hundred forty-two thousand, four hundred fifty".