135232144 has 20 divisors (see below), whose sum is σ = 277425324. Its totient is φ = 63638528.

The previous prime is 135232117. The next prime is 135232171. The reversal of 135232144 is 441232531.

It is an interprime number because it is at equal distance from previous prime (135232117) and next prime (135232171).

It can be written as a sum of positive squares in 2 ways, for example, as 119071744 + 16160400 = 10912^2 + 4020^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248317 + ... + 248860.

Almost surely, 2^135232144 is an apocalyptic number.

It is an amenable number.

135232144 is an abundant number, since it is smaller than the sum of its proper divisors (142193180).

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

135232144 is a wasteful number, since it uses less digits than its factorization.

135232144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497202 (or 497196 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 135232144 is about 11628.9356348722. The cubic root of 135232144 is about 513.2866605492.

Adding to 135232144 its reverse (441232531), we get a palindrome (576464675).

The spelling of 135232144 in words is "one hundred thirty-five million, two hundred thirty-two thousand, one hundred forty-four".