135420866 has 16 divisors (see below), whose sum is σ = 244368960. Its totient is φ = 54982800.

The previous prime is 135420863. The next prime is 135420881. The reversal of 135420866 is 668024531.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (135420863) 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 7 ways as a sum of consecutive naturals, for example, 254285 + ... + 254816.

It is an arithmetic number, because the mean of its divisors is an integer number (15273060).

Almost surely, 2^135420866 is an apocalyptic number.

135420866 is a deficient number, since it is larger than the sum of its proper divisors (108948094).

135420866 is a wasteful number, since it uses less digits than its factorization.

135420866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509129.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 135420866 is about 11637.0471340456. The cubic root of 135420866 is about 513.5253204217.

The spelling of 135420866 in words is "one hundred thirty-five million, four hundred twenty thousand, eight hundred sixty-six".