135973078 has 4 divisors (see below), whose sum is σ = 203959620. Its totient is φ = 67986538.

The previous prime is 135973073. The next prime is 135973093. The reversal of 135973078 is 870379531.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135973073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33993268 + ... + 33993271.

It is an arithmetic number, because the mean of its divisors is an integer number (50989905).

Almost surely, 2^135973078 is an apocalyptic number.

135973078 is a deficient number, since it is larger than the sum of its proper divisors (67986542).

135973078 is an equidigital number, since it uses as much as digits as its factorization.

135973078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67986541.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 135973078 is about 11660.7494613339. The cubic root of 135973078 is about 514.2223825379. Note that the first 3 decimals are identical.

The spelling of 135973078 in words is "one hundred thirty-five million, nine hundred seventy-three thousand, seventy-eight".