135841440 has 96 divisors (see below), whose sum is σ = 489041280. Its totient is φ = 31048704.

The previous prime is 135841439. The next prime is 135841463. The reversal of 135841440 is 44148531.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 135841398 and 135841407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16855 + ... + 23574.

It is an arithmetic number, because the mean of its divisors is an integer number (5094180).

Almost surely, 2^135841440 is an apocalyptic number.

135841440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135841440 is an abundant number, since it is smaller than the sum of its proper divisors (353199840).

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

135841440 is a wasteful number, since it uses less digits than its factorization.

135841440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40454 (or 40446 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 135841440 is about 11655.1036031431. The cubic root of 135841440 is about 514.0563862904.

Adding to 135841440 its reverse (44148531), we get a palindrome (179989971).

The spelling of 135841440 in words is "one hundred thirty-five million, eight hundred forty-one thousand, four hundred forty".