134623978 has 4 divisors (see below), whose sum is σ = 201935970. Its totient is φ = 67311988.

The previous prime is 134623967. The next prime is 134624029. The reversal of 134623978 is 879326431.

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

It can be written as a sum of positive squares in only one way, i.e., 132181009 + 2442969 = 11497^2 + 1563^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 33655993 + ... + 33655996.

Almost surely, 2^134623978 is an apocalyptic number.

134623978 is a deficient number, since it is larger than the sum of its proper divisors (67311992).

134623978 is an equidigital number, since it uses as much as digits as its factorization.

134623978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67311991.

The product of its digits is 217728, while the sum is 43.

The square root of 134623978 is about 11602.7573447004. The cubic root of 134623978 is about 512.5160532747.

The spelling of 134623978 in words is "one hundred thirty-four million, six hundred twenty-three thousand, nine hundred seventy-eight".