121420573 has 2 divisors, whose sum is σ = 121420574. Its totient is φ = 121420572.

The previous prime is 121420553. The next prime is 121420577. The reversal of 121420573 is 375024121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69839449 + 51581124 = 8357^2 + 7182^2 .

It is an emirp because it is prime and its reverse (375024121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121420573 - 2¹⁷ = 121289501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121420577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60710286 + 60710287.

It is an arithmetic number, because the mean of its divisors is an integer number (60710287).

Almost surely, 2^121420573 is an apocalyptic number.

It is an amenable number.

121420573 is a deficient number, since it is larger than the sum of its proper divisors (1).

121420573 is an equidigital number, since it uses as much as digits as its factorization.

121420573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 121420573 is about 11019.1003716274. The cubic root of 121420573 is about 495.1811369864.

Adding to 121420573 its reverse (375024121), we get a palindrome (496444694).

The spelling of 121420573 in words is "one hundred twenty-one million, four hundred twenty thousand, five hundred seventy-three".