134321440 has 96 divisors (see below), whose sum is σ = 349017984. Its totient is φ = 48445440.

The previous prime is 134321413. The next prime is 134321443. The reversal of 134321440 is 44123431.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (134321443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293692 + ... + 294148.

It is an arithmetic number, because the mean of its divisors is an integer number (3635604).

Almost surely, 2^134321440 is an apocalyptic number.

134321440 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 134321440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174508992).

134321440 is an abundant number, since it is smaller than the sum of its proper divisors (214696544).

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

134321440 is a wasteful number, since it uses less digits than its factorization.

134321440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 134321440 is about 11589.7126797863. The cubic root of 134321440 is about 512.1318426745.

Adding to 134321440 its reverse (44123431), we get a palindrome (178444871).

The spelling of 134321440 in words is "one hundred thirty-four million, three hundred twenty-one thousand, four hundred forty".