134145978 has 32 divisors (see below), whose sum is σ = 272668032. Its totient is φ = 43992000.

The previous prime is 134145971. The next prime is 134145983. The reversal of 134145978 is 879541431.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (134145971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109075 + ... + 110297.

It is an arithmetic number, because the mean of its divisors is an integer number (8520876).

Almost surely, 2^134145978 is an apocalyptic number.

134145978 is an abundant number, since it is smaller than the sum of its proper divisors (138522054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

134145978 is a wasteful number, since it uses less digits than its factorization.

134145978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510.

The product of its digits is 120960, while the sum is 42.

The square root of 134145978 is about 11582.1404757497. The cubic root of 134145978 is about 511.9087488948.

The spelling of 134145978 in words is "one hundred thirty-four million, one hundred forty-five thousand, nine hundred seventy-eight".