133144402 has 4 divisors (see below), whose sum is σ = 199716606. Its totient is φ = 66572200.

The previous prime is 133144393. The next prime is 133144439. The reversal of 133144402 is 204441331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 95824521 + 37319881 = 9789^2 + 6109^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33286099 + ... + 33286102.

Almost surely, 2^133144402 is an apocalyptic number.

133144402 is a deficient number, since it is larger than the sum of its proper divisors (66572204).

133144402 is an equidigital number, since it uses as much as digits as its factorization.

133144402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66572203.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 133144402 is about 11538.8215169488. The cubic root of 133144402 is about 510.6315410952.

Adding to 133144402 its reverse (204441331), we get a palindrome (337585733).

The spelling of 133144402 in words is "one hundred thirty-three million, one hundred forty-four thousand, four hundred two".