135143020 has 24 divisors (see below), whose sum is σ = 288039024. Its totient is φ = 53249856.

The previous prime is 135142961. The next prime is 135143051. The reversal of 135143020 is 20341531.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49087 + ... + 51766.

It is an arithmetic number, because the mean of its divisors is an integer number (12001626).

Almost surely, 2^135143020 is an apocalyptic number.

135143020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135143020 is an abundant number, since it is smaller than the sum of its proper divisors (152896004).

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

135143020 is a wasteful number, since it uses less digits than its factorization.

135143020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100929 (or 100927 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 135143020 is about 11625.1030102963. The cubic root of 135143020 is about 513.1738761864.

Adding to 135143020 its reverse (20341531), we get a palindrome (155484551).

The spelling of 135143020 in words is "one hundred thirty-five million, one hundred forty-three thousand, twenty".