135502140 has 96 divisors (see below), whose sum is σ = 395910144. Its totient is φ = 34594560.

The previous prime is 135502139. The next prime is 135502141. The reversal of 135502140 is 41205531.

It is an interprime number because it is at equal distance from previous prime (135502139) and next prime (135502141).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135502141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148285 + ... + 149195.

It is an arithmetic number, because the mean of its divisors is an integer number (4124064).

Almost surely, 2^135502140 is an apocalyptic number.

135502140 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 135502140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197955072).

135502140 is an abundant number, since it is smaller than the sum of its proper divisors (260408004).

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

135502140 is a wasteful number, since it uses less digits than its factorization.

135502140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027 (or 1025 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 135502140 is about 11640.5386473307. The cubic root of 135502140 is about 513.6280320925.

Adding to 135502140 its reverse (41205531), we get a palindrome (176707671).

The spelling of 135502140 in words is "one hundred thirty-five million, five hundred two thousand, one hundred forty".