135215404 has 12 divisors (see below), whose sum is σ = 236993904. Its totient is φ = 67502864.

The previous prime is 135215393. The next prime is 135215407. The reversal of 135215404 is 404512531.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (135215407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23272 + ... + 28495.

It is an arithmetic number, because the mean of its divisors is an integer number (19749492).

Almost surely, 2^135215404 is an apocalyptic number.

It is an amenable number.

135215404 is a deficient number, since it is larger than the sum of its proper divisors (101778500).

135215404 is a wasteful number, since it uses less digits than its factorization.

135215404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52424 (or 52422 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 135215404 is about 11628.2158562696. The cubic root of 135215404 is about 513.2654802465.

Adding to 135215404 its reverse (404512531), we get a palindrome (539727935).

The spelling of 135215404 in words is "one hundred thirty-five million, two hundred fifteen thousand, four hundred four".