133506426 has 16 divisors (see below), whose sum is σ = 281066400. Its totient is φ = 42159888.

The previous prime is 133506409. The next prime is 133506433. The reversal of 133506426 is 624605331.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 133506393 and 133506402.

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 7 ways as a sum of consecutive naturals, for example, 585441 + ... + 585668.

It is an arithmetic number, because the mean of its divisors is an integer number (17566650).

Almost surely, 2^133506426 is an apocalyptic number.

133506426 is an abundant number, since it is smaller than the sum of its proper divisors (147559974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133506426 is a wasteful number, since it uses less digits than its factorization.

133506426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171133.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 133506426 is about 11554.4980851615. The cubic root of 133506426 is about 511.0939302388.

The spelling of 133506426 in words is "one hundred thirty-three million, five hundred six thousand, four hundred twenty-six".