210373421 has 2 divisors, whose sum is σ = 210373422. Its totient is φ = 210373420.

The previous prime is 210373417. The next prime is 210373441. The reversal of 210373421 is 124373012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166668100 + 43705321 = 12910^2 + 6611^2 .

It is a cyclic number.

It is not a de Polignac number, because 210373421 - 2² = 210373417 is a prime.

It is a Chen prime.

It is equal to p_11621066 and since 210373421 and 11621066 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 (210373441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105186710 + 105186711.

It is an arithmetic number, because the mean of its divisors is an integer number (105186711).

Almost surely, 2^210373421 is an apocalyptic number.

It is an amenable number.

210373421 is a deficient number, since it is larger than the sum of its proper divisors (1).

210373421 is an equidigital number, since it uses as much as digits as its factorization.

210373421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 210373421 is about 14504.2552721606. The cubic root of 210373421 is about 594.7443017777.

The spelling of 210373421 in words is "two hundred ten million, three hundred seventy-three thousand, four hundred twenty-one".