135235458 has 18 divisors (see below), whose sum is σ = 293117097. Its totient is φ = 45062040.

The previous prime is 135235433. The next prime is 135235501. The reversal of 135235458 is 854532531.

It can be written as a sum of positive squares in 2 ways, for example, as 129345129 + 5890329 = 11373^2 + 2427^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8223.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 47968 + ... + 50708.

Almost surely, 2^135235458 is an apocalyptic number.

135235458 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

135235458 is an abundant number, since it is smaller than the sum of its proper divisors (157881639).

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

135235458 is an frugal number, since it uses more digits than its factorization.

135235458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5490 (or 2746 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 135235458 is about 11629.0781233940. The cubic root of 135235458 is about 513.2908533840.

Adding to 135235458 its reverse (854532531), we get a palindrome (989767989).

It can be divided in two parts, 13523 and 5458, that added together give a palindrome (18981).

The spelling of 135235458 in words is "one hundred thirty-five million, two hundred thirty-five thousand, four hundred fifty-eight".