134239249440 has 288 divisors, whose sum is σ = 462356294400. Its totient is φ = 35465213952.

The previous prime is 134239249427. The next prime is 134239249489. The reversal of 134239249440 is 44942932431.

134239249440 is a `hidden beast` number, since 1 + 34 + 2 + 3 + 92 + 494 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (45).

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 47 ways as a sum of consecutive naturals, for example, 138819837 + ... + 138820803.

It is an arithmetic number, because the mean of its divisors is an integer number (1605403800).

Almost surely, 2^134239249440 is an apocalyptic number.

134239249440 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 134239249440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231178147200).

134239249440 is an abundant number, since it is smaller than the sum of its proper divisors (328117044960).

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

134239249440 is a wasteful number, since it uses less digits than its factorization.

134239249440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784 (or 1773 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The spelling of 134239249440 in words is "one hundred thirty-four billion, two hundred thirty-nine million, two hundred forty-nine thousand, four hundred forty".