135102640 has 40 divisors (see below), whose sum is σ = 318104640. Its totient is φ = 53354496.

The previous prime is 135102629. The next prime is 135102641. The reversal of 135102640 is 46201531.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (135102641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4369 + ... + 17008.

It is an arithmetic number, because the mean of its divisors is an integer number (7952616).

Almost surely, 2^135102640 is an apocalyptic number.

135102640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135102640 is an abundant number, since it is smaller than the sum of its proper divisors (183002000).

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

135102640 is a wasteful number, since it uses less digits than its factorization.

135102640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21469 (or 21463 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 135102640 is about 11623.3661217394. The cubic root of 135102640 is about 513.1227599064.

The spelling of 135102640 in words is "one hundred thirty-five million, one hundred two thousand, six hundred forty".