134839540 has 48 divisors (see below), whose sum is σ = 311794560. Its totient is φ = 48574080.

The previous prime is 134839517. The next prime is 134839567. The reversal of 134839540 is 45938431.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 134839540.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 21169 + ... + 26791.

It is an arithmetic number, because the mean of its divisors is an integer number (6495720).

Almost surely, 2^134839540 is an apocalyptic number.

134839540 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 134839540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155897280).

134839540 is an abundant number, since it is smaller than the sum of its proper divisors (176955020).

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

134839540 is a wasteful number, since it uses less digits than its factorization.

134839540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5752 (or 5750 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 134839540 is about 11612.0428865898. The cubic root of 134839540 is about 512.7894569497.

The spelling of 134839540 in words is "one hundred thirty-four million, eight hundred thirty-nine thousand, five hundred forty".