133530146 has 8 divisors (see below), whose sum is σ = 201312540. Its totient is φ = 66425968.

The previous prime is 133530143. The next prime is 133530169. The reversal of 133530146 is 641035331.

It can be written as a sum of positive squares in 2 ways, for example, as 131354521 + 2175625 = 11461^2 + 1475^2 .

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 (133530143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169061 + ... + 169848.

Almost surely, 2^133530146 is an apocalyptic number.

133530146 is a deficient number, since it is larger than the sum of its proper divisors (67782394).

133530146 is a wasteful number, since it uses less digits than its factorization.

133530146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339108.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 133530146 is about 11555.5244796591. The cubic root of 133530146 is about 511.1241970220.

Adding to 133530146 its reverse (641035331), we get a palindrome (774565477).

The spelling of 133530146 in words is "one hundred thirty-three million, five hundred thirty thousand, one hundred forty-six".