135143212 has 6 divisors (see below), whose sum is σ = 236500628. Its totient is φ = 67571604.

The previous prime is 135143191. The next prime is 135143227. The reversal of 135143212 is 212341531.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16892898 + ... + 16892905.

Almost surely, 2^135143212 is an apocalyptic number.

It is an amenable number.

135143212 is a deficient number, since it is larger than the sum of its proper divisors (101357416).

135143212 is a wasteful number, since it uses less digits than its factorization.

135143212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33785807 (or 33785805 counting only the distinct ones).

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

The square root of 135143212 is about 11625.1112682847. Note that the first 3 decimals coincide. The cubic root of 135143212 is about 513.1741192112.

Adding to 135143212 its reverse (212341531), we get a palindrome (347484743).

The spelling of 135143212 in words is "one hundred thirty-five million, one hundred forty-three thousand, two hundred twelve".