133240043 has 4 divisors (see below), whose sum is σ = 135424368. Its totient is φ = 131055720.

The previous prime is 133240021. The next prime is 133240061. The reversal of 133240043 is 340042331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340042331 = 2543 ⋅133717.

It is a cyclic number.

It is not a de Polignac number, because 133240043 - 2⁸ = 133239787 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133239997 and 133240024.

It is not an unprimeable number, because it can be changed into a prime (133240343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1092071 + ... + 1092192.

It is an arithmetic number, because the mean of its divisors is an integer number (33856092).

Almost surely, 2^133240043 is an apocalyptic number.

133240043 is a deficient number, since it is larger than the sum of its proper divisors (2184325).

133240043 is an equidigital number, since it uses as much as digits as its factorization.

133240043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184324.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 133240043 is about 11542.9650870130. The cubic root of 133240043 is about 510.7537783590.

Adding to 133240043 its reverse (340042331), we get a palindrome (473282374).

The spelling of 133240043 in words is "one hundred thirty-three million, two hundred forty thousand, forty-three".