134169840 has 180 divisors, whose sum is σ = 524290104. Its totient is φ = 30659328.

The previous prime is 134169823. The next prime is 134169851. The reversal of 134169840 is 48961431.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 134169795 and 134169804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33379 + ... + 37181.

Almost surely, 2^134169840 is an apocalyptic number.

134169840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 134169840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262145052).

134169840 is an abundant number, since it is smaller than the sum of its proper divisors (390120264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

134169840 is a wasteful number, since it uses less digits than its factorization.

134169840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3836 (or 3820 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 134169840 is about 11583.1705504149. The cubic root of 134169840 is about 511.9391000156.

The spelling of 134169840 in words is "one hundred thirty-four million, one hundred sixty-nine thousand, eight hundred forty".