135405761 has 8 divisors (see below), whose sum is σ = 148729920. Its totient is φ = 122701392.

The previous prime is 135405719. The next prime is 135405773. The reversal of 135405761 is 167504531.

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

It is not a de Polignac number, because 135405761 - 2²⁶ = 68296897 is a prime.

It is a super-2 number, since 2×135405761² = 36669440223978242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135405701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154490 + ... + 155363.

It is an arithmetic number, because the mean of its divisors is an integer number (18591240).

Almost surely, 2^135405761 is an apocalyptic number.

It is an amenable number.

135405761 is a deficient number, since it is larger than the sum of its proper divisors (13324159).

135405761 is a wasteful number, since it uses less digits than its factorization.

135405761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309895.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 135405761 is about 11636.3981110995. The cubic root of 135405761 is about 513.5062266424.

The spelling of 135405761 in words is "one hundred thirty-five million, four hundred five thousand, seven hundred sixty-one".