169421143 has 8 divisors (see below), whose sum is σ = 173907216. Its totient is φ = 164952000.

The previous prime is 169421129. The next prime is 169421171. The reversal of 169421143 is 341124961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 169421143 - 2⁵ = 169421111 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 (169421543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17493 + ... + 25393.

It is an arithmetic number, because the mean of its divisors is an integer number (21738402).

Almost surely, 2^169421143 is an apocalyptic number.

169421143 is a deficient number, since it is larger than the sum of its proper divisors (4486073).

169421143 is an equidigital number, since it uses as much as digits as its factorization.

169421143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8465.

The product of its digits is 5184, while the sum is 31.

The square root of 169421143 is about 13016.1877291318. The cubic root of 169421143 is about 553.3363518569.

The spelling of 169421143 in words is "one hundred sixty-nine million, four hundred twenty-one thousand, one hundred forty-three".