33421943 has 2 divisors, whose sum is σ = 33421944. Its totient is φ = 33421942.

The previous prime is 33421939. The next prime is 33421957. The reversal of 33421943 is 34912433.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33421943 - 2² = 33421939 is a prime.

It is a super-2 number, since 2×33421943² = 2234052547790498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33421963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16710971 + 16710972.

It is an arithmetic number, because the mean of its divisors is an integer number (16710972).

Almost surely, 2^33421943 is an apocalyptic number.

33421943 is a deficient number, since it is larger than the sum of its proper divisors (1).

33421943 is an equidigital number, since it uses as much as digits as its factorization.

33421943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 29.

The square root of 33421943 is about 5781.1714210876. The cubic root of 33421943 is about 322.1147148593.

The spelling of 33421943 in words is "thirty-three million, four hundred twenty-one thousand, nine hundred forty-three".