134121440 has 48 divisors (see below), whose sum is σ = 321230448. Its totient is φ = 52909056.

The previous prime is 134121389. The next prime is 134121451. The reversal of 134121440 is 44121431.

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

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 7 ways as a sum of consecutive naturals, for example, 5939 + ... + 17421.

It is an arithmetic number, because the mean of its divisors is an integer number (6692301).

Almost surely, 2^134121440 is an apocalyptic number.

134121440 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 134121440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160615224).

134121440 is an abundant number, since it is smaller than the sum of its proper divisors (187109008).

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

134121440 is a wasteful number, since it uses less digits than its factorization.

134121440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11571 (or 11563 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 134121440 is about 11581.0811239711. The cubic root of 134121440 is about 511.8775341862.

Adding to 134121440 its reverse (44121431), we get a palindrome (178242871).

Subtracting from 134121440 its reverse (44121431), we obtain a palindrome (90000009).

The spelling of 134121440 in words is "one hundred thirty-four million, one hundred twenty-one thousand, four hundred forty".