135430178 has 12 divisors (see below), whose sum is σ = 219974418. Its totient is φ = 62506080.

The previous prime is 135430151. The next prime is 135430181. The reversal of 135430178 is 871034531.

It can be written as a sum of positive squares in 3 ways, for example, as 74011609 + 61418569 = 8603^2 + 7837^2 .

It is a super-2 number, since 2×135430178² = 36682666226223368, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 200003 + ... + 200678.

Almost surely, 2^135430178 is an apocalyptic number.

135430178 is a deficient number, since it is larger than the sum of its proper divisors (84544240).

135430178 is a wasteful number, since it uses less digits than its factorization.

135430178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400709 (or 400696 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 135430178 is about 11637.4472286666. The cubic root of 135430178 is about 513.5370907353.

The spelling of 135430178 in words is "one hundred thirty-five million, four hundred thirty thousand, one hundred seventy-eight".