135400081 has 8 divisors (see below), whose sum is σ = 139104000. Its totient is φ = 131715360.

The previous prime is 135400073. The next prime is 135400129. The reversal of 135400081 is 180004531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135400081 - 2³ = 135400073 is a prime.

It is a super-2 number, since 2×135400081² = 36666363869613122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135400021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10120 + ... + 19318.

It is an arithmetic number, because the mean of its divisors is an integer number (17388000).

Almost surely, 2^135400081 is an apocalyptic number.

It is an amenable number.

135400081 is a deficient number, since it is larger than the sum of its proper divisors (3703919).

135400081 is an equidigital number, since it uses as much as digits as its factorization.

135400081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9599.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 135400081 is about 11636.1540467630. The cubic root of 135400081 is about 513.4990463567.

The spelling of 135400081 in words is "one hundred thirty-five million, four hundred thousand, eighty-one".