420161 has 8 divisors (see below), whose sum is σ = 484224. Its totient is φ = 357120.

The previous prime is 420149. The next prime is 420163. The reversal of 420161 is 161024.

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 420161 - 2⁶ = 420097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420163) 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, 1196 + ... + 1506.

It is an arithmetic number, because the mean of its divisors is an integer number (60528).

2⁴²⁰¹⁶¹ is an apocalyptic number.

It is an amenable number.

420161 is a deficient number, since it is larger than the sum of its proper divisors (64063).

420161 is a wasteful number, since it uses less digits than its factorization.

420161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 420161 is about 648.1982721359. The cubic root of 420161 is about 74.8982917644.

Adding to 420161 its reverse (161024), we get a palindrome (581185).

The spelling of 420161 in words is "four hundred twenty thousand, one hundred sixty-one".