135043440 has 160 divisors (see below), whose sum is σ = 494063616. Its totient is φ = 29859840.

The previous prime is 135043387. The next prime is 135043481. The reversal of 135043440 is 44340531.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 135043440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50784 + ... + 53376.

Almost surely, 2^135043440 is an apocalyptic number.

135043440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135043440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247031808).

135043440 is an abundant number, since it is smaller than the sum of its proper divisors (359020176).

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

135043440 is a wasteful number, since it uses less digits than its factorization.

135043440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647 (or 2641 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 135043440 is about 11620.8192482286. The cubic root of 135043440 is about 513.0478013283.

Adding to 135043440 its reverse (44340531), we get a palindrome (179383971).

The spelling of 135043440 in words is "one hundred thirty-five million, forty-three thousand, four hundred forty".