334942021 has 2 divisors, whose sum is σ = 334942022. Its totient is φ = 334942020.

The previous prime is 334941989. The next prime is 334942037. The reversal of 334942021 is 120249433.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218625796 + 116316225 = 14786^2 + 10785^2 .

It is a cyclic number.

It is not a de Polignac number, because 334942021 - 2⁵ = 334941989 is a prime.

It is a super-2 number, since 2×334942021² = 224372314863128882, which contains 22 as substring.

It is equal to p_18037207 and since 334942021 and 18037207 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (334942081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167471010 + 167471011.

It is an arithmetic number, because the mean of its divisors is an integer number (167471011).

Almost surely, 2^334942021 is an apocalyptic number.

It is an amenable number.

334942021 is a deficient number, since it is larger than the sum of its proper divisors (1).

334942021 is an equidigital number, since it uses as much as digits as its factorization.

334942021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 334942021 is about 18301.4212836053. The cubic root of 334942021 is about 694.4748865437.

The spelling of 334942021 in words is "three hundred thirty-four million, nine hundred forty-two thousand, twenty-one".