133530426 has 24 divisors (see below), whose sum is σ = 294776820. Its totient is φ = 43670016.

The previous prime is 133530421. The next prime is 133530443. The reversal of 133530426 is 624035331.

It is a happy number.

133530426 is a `hidden beast` number, since 1 + 335 + 304 + 26 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 128799801 + 4730625 = 11349^2 + 2175^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 133530426.

It is not an unprimeable number, because it can be changed into a prime (133530421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69031 + ... + 70938.

Almost surely, 2^133530426 is an apocalyptic number.

133530426 is an abundant number, since it is smaller than the sum of its proper divisors (161246394).

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

133530426 is a wasteful number, since it uses less digits than its factorization.

133530426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140030 (or 140027 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 133530426 is about 11555.5365950699. The cubic root of 133530426 is about 511.1245542813.

Adding to 133530426 its reverse (624035331), we get a palindrome (757565757).

It can be divided in two parts, 133530 and 426, that added together give a square (133956 = 366²).

The spelling of 133530426 in words is "one hundred thirty-three million, five hundred thirty thousand, four hundred twenty-six".