210120541 has 2 divisors, whose sum is σ = 210120542. Its totient is φ = 210120540.

The previous prime is 210120523. The next prime is 210120551. The reversal of 210120541 is 145021012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151659225 + 58461316 = 12315^2 + 7646^2 .

It is a cyclic number.

It is not a de Polignac number, because 210120541 - 2⁷ = 210120413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210120551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105060270 + 105060271.

It is an arithmetic number, because the mean of its divisors is an integer number (105060271).

Almost surely, 2^210120541 is an apocalyptic number.

It is an amenable number.

210120541 is a deficient number, since it is larger than the sum of its proper divisors (1).

210120541 is an equidigital number, since it uses as much as digits as its factorization.

210120541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 210120541 is about 14495.5352091601. The cubic root of 210120541 is about 594.5059015066.

Adding to 210120541 its reverse (145021012), we get a palindrome (355141553).

The spelling of 210120541 in words is "two hundred ten million, one hundred twenty thousand, five hundred forty-one".