135515142 has 48 divisors (see below), whose sum is σ = 336379680. Its totient is φ = 38624256.

The previous prime is 135515123. The next prime is 135515189. The reversal of 135515142 is 241515531.

135515142 is a `hidden beast` number, since 1 + 3 + 5 + 515 + 142 = 666.

It is a super-2 number, since 2×135515142² = 36728707422560328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63078 + ... + 65190.

It is an arithmetic number, because the mean of its divisors is an integer number (7007910).

Almost surely, 2^135515142 is an apocalyptic number.

135515142 is an abundant number, since it is smaller than the sum of its proper divisors (200864538).

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

135515142 is a wasteful number, since it uses less digits than its factorization.

135515142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637 (or 2634 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 135515142 is about 11641.0971132450. The cubic root of 135515142 is about 513.6444598234.

It can be divided in two parts, 13 and 5515142, that added together give a palindrome (5515155).

The spelling of 135515142 in words is "one hundred thirty-five million, five hundred fifteen thousand, one hundred forty-two".