63402121 has 2 divisors, whose sum is σ = 63402122. Its totient is φ = 63402120.

The previous prime is 63402109. The next prime is 63402133. The reversal of 63402121 is 12120436.

63402121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (63402109) and next prime (63402133).

It can be written as a sum of positive squares in only one way, i.e., 47886400 + 15515721 = 6920^2 + 3939^2 .

It is a cyclic number.

It is not a de Polignac number, because 63402121 - 2⁵ = 63402089 is a prime.

It is not a weakly prime, because it can be changed into another prime (63403121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31701060 + 31701061.

It is an arithmetic number, because the mean of its divisors is an integer number (31701061).

Almost surely, 2^63402121 is an apocalyptic number.

It is an amenable number.

63402121 is a deficient number, since it is larger than the sum of its proper divisors (1).

63402121 is an equidigital number, since it uses as much as digits as its factorization.

63402121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 63402121 is about 7962.5448821341. The cubic root of 63402121 is about 398.7505198121.

Adding to 63402121 its reverse (12120436), we get a palindrome (75522557).

The spelling of 63402121 in words is "sixty-three million, four hundred two thousand, one hundred twenty-one".