133878146 has 8 divisors (see below), whose sum is σ = 201503484. Its totient is φ = 66710320.

The previous prime is 133878113. The next prime is 133878149. The reversal of 133878146 is 641878331.

It can be written as a sum of positive squares in 2 ways, for example, as 130210921 + 3667225 = 11411^2 + 1915^2 .

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

It is not an unprimeable number, because it can be changed into a prime (133878149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113645 + ... + 114816.

Almost surely, 2^133878146 is an apocalyptic number.

133878146 is a deficient number, since it is larger than the sum of its proper divisors (67625338).

133878146 is a wasteful number, since it uses less digits than its factorization.

133878146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228756.

The product of its digits is 96768, while the sum is 41.

The square root of 133878146 is about 11570.5724145351. The cubic root of 133878146 is about 511.5678344810.

The spelling of 133878146 in words is "one hundred thirty-three million, eight hundred seventy-eight thousand, one hundred forty-six".