420211121 has 8 divisors (see below), whose sum is σ = 458688288. Its totient is φ = 381780000.

The previous prime is 420211063. The next prime is 420211153. The reversal of 420211121 is 121112024.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420211121 - 2¹⁴ = 420194737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420211096 and 420211105.

It is not an unprimeable number, because it can be changed into a prime (420211021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9206 + ... + 30416.

It is an arithmetic number, because the mean of its divisors is an integer number (57336036).

Almost surely, 2^420211121 is an apocalyptic number.

It is an amenable number.

420211121 is a deficient number, since it is larger than the sum of its proper divisors (38477167).

420211121 is a wasteful number, since it uses less digits than its factorization.

420211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23023.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 420211121 is about 20499.0517097743. The cubic root of 420211121 is about 749.0126985143.

Adding to 420211121 its reverse (121112024), we get a palindrome (541323145).

The spelling of 420211121 in words is "four hundred twenty million, two hundred eleven thousand, one hundred twenty-one".