135781046 has 8 divisors (see below), whose sum is σ = 209176320. Its totient is φ = 66055608.

The previous prime is 135781043. The next prime is 135781069. The reversal of 135781046 is 640187531.

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

It is a junction number, because it is equal to n+sod(n) for n = 135780997 and 135781015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135781043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917366 + ... + 917513.

It is an arithmetic number, because the mean of its divisors is an integer number (26147040).

Almost surely, 2^135781046 is an apocalyptic number.

135781046 is a deficient number, since it is larger than the sum of its proper divisors (73395274).

135781046 is a wasteful number, since it uses less digits than its factorization.

135781046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834918.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 135781046 is about 11652.5124329477. The cubic root of 135781046 is about 513.9801932342.

The spelling of 135781046 in words is "one hundred thirty-five million, seven hundred eighty-one thousand, forty-six".