133331426 has 8 divisors (see below), whose sum is σ = 204875244. Its totient is φ = 65039680.

The previous prime is 133331423. The next prime is 133331431. The reversal of 133331426 is 624133331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 116100625 + 17230801 = 10775^2 + 4151^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 133331395 and 133331404.

It is not an unprimeable number, because it can be changed into a prime (133331423) 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 3 ways as a sum of consecutive naturals, for example, 812915 + ... + 813078.

Almost surely, 2^133331426 is an apocalyptic number.

133331426 is a deficient number, since it is larger than the sum of its proper divisors (71543818).

133331426 is a wasteful number, since it uses less digits than its factorization.

133331426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626036.

The product of its digits is 3888, while the sum is 26.

The square root of 133331426 is about 11546.9227935411. The cubic root of 133331426 is about 510.8705189049.

Adding to 133331426 its reverse (624133331), we get a palindrome (757464757).

The spelling of 133331426 in words is "one hundred thirty-three million, three hundred thirty-one thousand, four hundred twenty-six".