135262440 has 64 divisors (see below), whose sum is σ = 450878400. Its totient is φ = 36069696.

The previous prime is 135262411. The next prime is 135262459. The reversal of 135262440 is 44262531.

135262440 is a `hidden beast` number, since 1 + 35 + 2 + 624 + 4 + 0 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61542 + ... + 63701.

It is an arithmetic number, because the mean of its divisors is an integer number (7044975).

Almost surely, 2^135262440 is an apocalyptic number.

135262440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135262440 is an abundant number, since it is smaller than the sum of its proper divisors (315615960).

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

135262440 is a wasteful number, since it uses less digits than its factorization.

135262440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125263 (or 125253 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 135262440 is about 11630.2381746893. The cubic root of 135262440 is about 513.3249881517.

Subtracting from 135262440 its reverse (44262531), we obtain a palindrome (90999909).

The spelling of 135262440 in words is "one hundred thirty-five million, two hundred sixty-two thousand, four hundred forty".