134423040 has 160 divisors (see below), whose sum is σ = 449006976. Its totient is φ = 34242560.

The previous prime is 134423011. The next prime is 134423041. The reversal of 134423040 is 40324431.

It is a tau number, because it is divible by the number of its divisors (160).

It is a junction number, because it is equal to n+sod(n) for n = 134422998 and 134423016.

It is not an unprimeable number, because it can be changed into a prime (134423041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176260 + ... + 177020.

Almost surely, 2^134423040 is an apocalyptic number.

134423040 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 134423040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224503488).

134423040 is an abundant number, since it is smaller than the sum of its proper divisors (314583936).

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

134423040 is an equidigital number, since it uses as much as digits as its factorization.

134423040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 134423040 is about 11594.0950487738. The cubic root of 134423040 is about 512.2609347035.

Adding to 134423040 its reverse (40324431), we get a palindrome (174747471).

The spelling of 134423040 in words is "one hundred thirty-four million, four hundred twenty-three thousand, forty".