63420121 has 4 divisors (see below), whose sum is σ = 63439312. Its totient is φ = 63400932.

The previous prime is 63420101. The next prime is 63420127. The reversal of 63420121 is 12102436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63420121 - 2¹¹ = 63418073 is a prime.

It is a super-2 number, since 2×63420121² = 8044223495309282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63420127) 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 in 3 ways as a sum of consecutive naturals, for example, 3231 + ... + 11716.

It is an arithmetic number, because the mean of its divisors is an integer number (15859828).

Almost surely, 2^63420121 is an apocalyptic number.

It is an amenable number.

63420121 is a deficient number, since it is larger than the sum of its proper divisors (19191).

63420121 is a wasteful number, since it uses less digits than its factorization.

63420121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19190.

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

The square root of 63420121 is about 7963.6750938245. The cubic root of 63420121 is about 398.7882516214.

Adding to 63420121 its reverse (12102436), we get a palindrome (75522557).

The spelling of 63420121 in words is "sixty-three million, four hundred twenty thousand, one hundred twenty-one".