134149978 has 8 divisors (see below), whose sum is σ = 202459968. Its totient is φ = 66663324.

The previous prime is 134149957. The next prime is 134149987. The reversal of 134149978 is 879941431.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205426 + ... + 206077.

It is an arithmetic number, because the mean of its divisors is an integer number (25307496).

Almost surely, 2^134149978 is an apocalyptic number.

134149978 is a deficient number, since it is larger than the sum of its proper divisors (68309990).

134149978 is a wasteful number, since it uses less digits than its factorization.

134149978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411668.

The product of its digits is 217728, while the sum is 46.

The square root of 134149978 is about 11582.3131541156. The cubic root of 134149978 is about 511.9138369207.

The spelling of 134149978 in words is "one hundred thirty-four million, one hundred forty-nine thousand, nine hundred seventy-eight".