135661442 has 8 divisors (see below), whose sum is σ = 232562496. Its totient is φ = 58140612.

The previous prime is 135661417. The next prime is 135661447. The reversal of 135661442 is 244166531.

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 = 135661399 and 135661408.

It is not an unprimeable number, because it can be changed into a prime (135661447) 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, 4845038 + ... + 4845065.

It is an arithmetic number, because the mean of its divisors is an integer number (29070312).

Almost surely, 2^135661442 is an apocalyptic number.

135661442 is a deficient number, since it is larger than the sum of its proper divisors (96901054).

135661442 is an equidigital number, since it uses as much as digits as its factorization.

135661442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9690112.

The product of its digits is 17280, while the sum is 32.

The square root of 135661442 is about 11647.3791901869. The cubic root of 135661442 is about 513.8292341529.

The spelling of 135661442 in words is "one hundred thirty-five million, six hundred sixty-one thousand, four hundred forty-two".