135029978 has 8 divisors (see below), whose sum is σ = 202702260. Its totient is φ = 67462560.

The previous prime is 135029977. The next prime is 135030011. The reversal of 135029978 is 879920531.

It can be written as a sum of positive squares in 2 ways, for example, as 98148649 + 36881329 = 9907^2 + 6073^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135029977) 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 3 ways as a sum of consecutive naturals, for example, 22913 + ... + 28196.

Almost surely, 2^135029978 is an apocalyptic number.

135029978 is a deficient number, since it is larger than the sum of its proper divisors (67672282).

135029978 is a wasteful number, since it uses less digits than its factorization.

135029978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52432.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 135029978 is about 11620.2400147329. The cubic root of 135029978 is about 513.0307527919.

The spelling of 135029978 in words is "one hundred thirty-five million, twenty-nine thousand, nine hundred seventy-eight".