133406249 has 8 divisors (see below), whose sum is σ = 134447040. Its totient is φ = 132370000.

The previous prime is 133406219. The next prime is 133406263. The reversal of 133406249 is 942604331.

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

It is a cyclic number.

It is not a de Polignac number, because 133406249 - 2¹² = 133402153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133406219) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 77207 + ... + 78915.

It is an arithmetic number, because the mean of its divisors is an integer number (16805880).

Almost surely, 2^133406249 is an apocalyptic number.

It is an amenable number.

133406249 is a deficient number, since it is larger than the sum of its proper divisors (1040791).

133406249 is a wasteful number, since it uses less digits than its factorization.

133406249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 133406249 is about 11550.1622932321. The cubic root of 133406249 is about 510.9660645634.

The spelling of 133406249 in words is "one hundred thirty-three million, four hundred six thousand, two hundred forty-nine".