134013440 has 80 divisors (see below), whose sum is σ = 350602560. Its totient is φ = 48721920.

The previous prime is 134013427. The next prime is 134013457. The reversal of 134013440 is 44310431.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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, 25781 + ... + 30539.

It is an arithmetic number, because the mean of its divisors is an integer number (4382532).

Almost surely, 2^134013440 is an apocalyptic number.

134013440 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 134013440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175301280).

134013440 is an abundant number, since it is smaller than the sum of its proper divisors (216589120).

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

134013440 is an equidigital number, since it uses as much as digits as its factorization.

134013440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4793 (or 4777 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 134013440 is about 11576.4174078166. The cubic root of 134013440 is about 511.7401024701.

Adding to 134013440 its reverse (44310431), we get a palindrome (178323871).

The spelling of 134013440 in words is "one hundred thirty-four million, thirteen thousand, four hundred forty".