135245440 has 64 divisors (see below), whose sum is σ = 352732320. Its totient is φ = 49177600.

The previous prime is 135245431. The next prime is 135245447. The reversal of 135245440 is 44542531.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 135245399 and 135245408.

It is not an unprimeable number, because it can be changed into a prime (135245447) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2566 + ... + 16645.

Almost surely, 2^135245440 is an apocalyptic number.

135245440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135245440 is an abundant number, since it is smaller than the sum of its proper divisors (217486880).

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

135245440 is a wasteful number, since it uses less digits than its factorization.

135245440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19241 (or 19229 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 135245440 is about 11629.5072982478. The cubic root of 135245440 is about 513.3034820819.

Adding to 135245440 its reverse (44542531), we get a palindrome (179787971).

The spelling of 135245440 in words is "one hundred thirty-five million, two hundred forty-five thousand, four hundred forty".