135780739 has 4 divisors (see below), whose sum is σ = 135899656. Its totient is φ = 135661824.

The previous prime is 135780719. The next prime is 135780761. The reversal of 135780739 is 937087531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135780739 - 2⁷ = 135780611 is a prime.

It is a super-2 number, since 2×135780739² = 36872818166772242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135780695 and 135780704.

It is not an unprimeable number, because it can be changed into a prime (135780719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57729 + ... + 60034.

It is an arithmetic number, because the mean of its divisors is an integer number (33974914).

Almost surely, 2^135780739 is an apocalyptic number.

135780739 is a deficient number, since it is larger than the sum of its proper divisors (118917).

135780739 is a wasteful number, since it uses less digits than its factorization.

135780739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118916.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 135780739 is about 11652.4992598155. The cubic root of 135780739 is about 513.9798058653.

The spelling of 135780739 in words is "one hundred thirty-five million, seven hundred eighty thousand, seven hundred thirty-nine".