135128324 has 6 divisors (see below), whose sum is σ = 236474574. Its totient is φ = 67564160.

The previous prime is 135128321. The next prime is 135128339. The reversal of 135128324 is 423821531.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 73788100 + 61340224 = 8590^2 + 7832^2 .

It is not an unprimeable number, because it can be changed into a prime (135128321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16891037 + ... + 16891044.

It is an arithmetic number, because the mean of its divisors is an integer number (39412429).

Almost surely, 2^135128324 is an apocalyptic number.

It is an amenable number.

135128324 is a deficient number, since it is larger than the sum of its proper divisors (101346250).

135128324 is a wasteful number, since it uses less digits than its factorization.

135128324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33782085 (or 33782083 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 135128324 is about 11624.4709126910. The cubic root of 135128324 is about 513.1552739760.

Adding to 135128324 its reverse (423821531), we get a palindrome (558949855).

The spelling of 135128324 in words is "one hundred thirty-five million, one hundred twenty-eight thousand, three hundred twenty-four".