133003427 has 4 divisors (see below), whose sum is σ = 140827176. Its totient is φ = 125179680.

The previous prime is 133003421. The next prime is 133003463. The reversal of 133003427 is 724300331.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 133003427 - 2¹⁰ = 133002403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133003421) 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, 3911849 + ... + 3911882.

It is an arithmetic number, because the mean of its divisors is an integer number (35206794).

Almost surely, 2^133003427 is an apocalyptic number.

133003427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

133003427 is a deficient number, since it is larger than the sum of its proper divisors (7823749).

133003427 is an equidigital number, since it uses as much as digits as its factorization.

133003427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7823748.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 133003427 is about 11532.7111730070. The cubic root of 133003427 is about 510.4512563766.

Adding to 133003427 its reverse (724300331), we get a palindrome (857303758).

The spelling of 133003427 in words is "one hundred thirty-three million, three thousand, four hundred twenty-seven".