133501406 has 8 divisors (see below), whose sum is σ = 200905320. Its totient is φ = 66532968.

The previous prime is 133501399. The next prime is 133501441. The reversal of 133501406 is 604105331.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108101 + ... + 109328.

It is an arithmetic number, because the mean of its divisors is an integer number (25113165).

Almost surely, 2^133501406 is an apocalyptic number.

133501406 is a deficient number, since it is larger than the sum of its proper divisors (67403914).

133501406 is a wasteful number, since it uses less digits than its factorization.

133501406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217738.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 133501406 is about 11554.2808517017. The cubic root of 133501406 is about 511.0875242458.

Adding to 133501406 its reverse (604105331), we get a palindrome (737606737).

The spelling of 133501406 in words is "one hundred thirty-three million, five hundred one thousand, four hundred six".