134997440 has 56 divisors (see below), whose sum is σ = 325922640. Its totient is φ = 53250048.

The previous prime is 134997431. The next prime is 134997449. The reversal of 134997440 is 44799431.

It is an interprime number because it is at equal distance from previous prime (134997431) and next prime (134997449).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134997449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20471 + ... + 26249.

Almost surely, 2^134997440 is an apocalyptic number.

134997440 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 134997440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162961320).

134997440 is an abundant number, since it is smaller than the sum of its proper divisors (190925200).

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

134997440 is an equidigital number, since it uses as much as digits as its factorization.

134997440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5869 (or 5859 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 134997440 is about 11618.8398732404. The cubic root of 134997440 is about 512.9895413615.

It can be divided in two parts, 1349 and 97440, that added together give a palindrome (98789).

The spelling of 134997440 in words is "one hundred thirty-four million, nine hundred ninety-seven thousand, four hundred forty".