135405456 has 20 divisors (see below), whose sum is σ = 349797552. Its totient is φ = 45135136.

The previous prime is 135405443. The next prime is 135405461. The reversal of 135405456 is 654504531.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1410426 + ... + 1410521.

Almost surely, 2^135405456 is an apocalyptic number.

135405456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

135405456 is an abundant number, since it is smaller than the sum of its proper divisors (214392096).

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

135405456 is a wasteful number, since it uses less digits than its factorization.

135405456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820958 (or 2820952 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 135405456 is about 11636.3850056622. The cubic root of 135405456 is about 513.5058410864.

Adding to 135405456 its reverse (654504531), we get a palindrome (789909987).

The spelling of 135405456 in words is "one hundred thirty-five million, four hundred five thousand, four hundred fifty-six".