135866146 has 16 divisors (see below), whose sum is σ = 225409464. Its totient is φ = 61012224.

The previous prime is 135866113. The next prime is 135866147. The reversal of 135866146 is 641668531.

It can be written as a sum of positive squares in 4 ways, for example, as 98227921 + 37638225 = 9911^2 + 6135^2 .

It is a junction number, because it is equal to n+sod(n) for n = 135866099 and 135866108.

It is not an unprimeable number, because it can be changed into a prime (135866147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69655 + ... + 71578.

Almost surely, 2^135866146 is an apocalyptic number.

135866146 is a deficient number, since it is larger than the sum of its proper divisors (89543318).

135866146 is a wasteful number, since it uses less digits than its factorization.

135866146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141285.

The product of its digits is 103680, while the sum is 40.

The square root of 135866146 is about 11656.1634339949. The cubic root of 135866146 is about 514.0875488655.

The spelling of 135866146 in words is "one hundred thirty-five million, eight hundred sixty-six thousand, one hundred forty-six".