420022121 has 8 divisors (see below), whose sum is σ = 427963200. Its totient is φ = 412108560.

The previous prime is 420022103. The next prime is 420022153. The reversal of 420022121 is 121220024.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420022121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 420022096 and 420022105.

It is not an unprimeable number, because it can be changed into a prime (420022181) 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, 25340 + ... + 38498.

It is an arithmetic number, because the mean of its divisors is an integer number (53495400).

Almost surely, 2^420022121 is an apocalyptic number.

It is an amenable number.

420022121 is a deficient number, since it is larger than the sum of its proper divisors (7941079).

420022121 is a wasteful number, since it uses less digits than its factorization.

420022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13759.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 420022121 is about 20494.4412219509. The cubic root of 420022121 is about 748.9003862169.

Adding to 420022121 its reverse (121220024), we get a palindrome (541242145).

The spelling of 420022121 in words is "four hundred twenty million, twenty-two thousand, one hundred twenty-one".