135539402 has 16 divisors (see below), whose sum is σ = 218920320. Its totient is φ = 62701248.

The previous prime is 135539401. The next prime is 135539423. The reversal of 135539402 is 204935531.

It is not an unprimeable number, because it can be changed into a prime (135539401) 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, 31778 + ... + 35789.

It is an arithmetic number, because the mean of its divisors is an integer number (13682520).

Almost surely, 2^135539402 is an apocalyptic number.

135539402 is a deficient number, since it is larger than the sum of its proper divisors (83380918).

135539402 is a wasteful number, since it uses less digits than its factorization.

135539402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67645.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 135539402 is about 11642.1390646221. The cubic root of 135539402 is about 513.6751089718.

The spelling of 135539402 in words is "one hundred thirty-five million, five hundred thirty-nine thousand, four hundred two".