33642943 has 2 divisors, whose sum is σ = 33642944. Its totient is φ = 33642942.

The previous prime is 33642941. The next prime is 33642991. The reversal of 33642943 is 34924633.

33642943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33642943 - 2¹ = 33642941 is a prime.

It is a super-2 number, since 2×33642943² = 2263695227402498, which contains 22 as substring.

Together with 33642941, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 33642899 and 33642908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33642941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16821471 + 16821472.

It is an arithmetic number, because the mean of its divisors is an integer number (16821472).

Almost surely, 2^33642943 is an apocalyptic number.

33642943 is a deficient number, since it is larger than the sum of its proper divisors (1).

33642943 is an equidigital number, since it uses as much as digits as its factorization.

33642943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 34.

The square root of 33642943 is about 5800.2537013479. The cubic root of 33642943 is about 322.8231418441.

The spelling of 33642943 in words is "thirty-three million, six hundred forty-two thousand, nine hundred forty-three".