135120481 has 4 divisors (see below), whose sum is σ = 135555264. Its totient is φ = 134685700.

The previous prime is 135120473. The next prime is 135120493. The reversal of 135120481 is 184021531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 184021531 = 59 ⋅3119009.

It is a cyclic number.

It is not a de Polignac number, because 135120481 - 2³ = 135120473 is a prime.

It is a super-2 number, since 2×135120481² = 36515088771342722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135120451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216925 + ... + 217546.

It is an arithmetic number, because the mean of its divisors is an integer number (33888816).

Almost surely, 2^135120481 is an apocalyptic number.

It is an amenable number.

135120481 is a deficient number, since it is larger than the sum of its proper divisors (434783).

135120481 is an equidigital number, since it uses as much as digits as its factorization.

135120481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434782.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 135120481 is about 11624.1335591088. The cubic root of 135120481 is about 513.1453457474.

The spelling of 135120481 in words is "one hundred thirty-five million, one hundred twenty thousand, four hundred eighty-one".