133440243 has 8 divisors (see below), whose sum is σ = 180172800. Its totient is φ = 87833928.

The previous prime is 133440233. The next prime is 133440271. The reversal of 133440243 is 342044331.

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

It is not a de Polignac number, because 133440243 - 2⁹ = 133439731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133440233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281283 + ... + 281756.

It is an arithmetic number, because the mean of its divisors is an integer number (22521600).

Almost surely, 2^133440243 is an apocalyptic number.

133440243 is a deficient number, since it is larger than the sum of its proper divisors (46732557).

133440243 is an equidigital number, since it uses as much as digits as its factorization.

133440243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563121.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 133440243 is about 11551.6337805524. The cubic root of 133440243 is about 511.0094615941.

Adding to 133440243 its reverse (342044331), we get a palindrome (475484574).

The spelling of 133440243 in words is "one hundred thirty-three million, four hundred forty thousand, two hundred forty-three".