169421734 has 4 divisors (see below), whose sum is σ = 254132604. Its totient is φ = 84710866.

The previous prime is 169421731. The next prime is 169421753. The reversal of 169421734 is 437124961.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 169421693 and 169421702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169421731) 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 as a sum of consecutive naturals, namely, 42355432 + ... + 42355435.

It is an arithmetic number, because the mean of its divisors is an integer number (63533151).

Almost surely, 2^169421734 is an apocalyptic number.

169421734 is a deficient number, since it is larger than the sum of its proper divisors (84710870).

169421734 is an equidigital number, since it uses as much as digits as its factorization.

169421734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84710869.

The product of its digits is 36288, while the sum is 37.

The square root of 169421734 is about 13016.2104316118. The cubic root of 169421734 is about 553.3369952662.

The spelling of 169421734 in words is "one hundred sixty-nine million, four hundred twenty-one thousand, seven hundred thirty-four".