420104161 has 4 divisors (see below), whose sum is σ = 421588912. Its totient is φ = 418619412.

The previous prime is 420104107. The next prime is 420104171. The reversal of 420104161 is 161401024.

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 a de Polignac number, because none of the positive numbers 2^k-420104161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420104101) 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 in 3 ways as a sum of consecutive naturals, for example, 741951 + ... + 742516.

It is an arithmetic number, because the mean of its divisors is an integer number (105397228).

Almost surely, 2^420104161 is an apocalyptic number.

It is an amenable number.

420104161 is a deficient number, since it is larger than the sum of its proper divisors (1484751).

420104161 is a wasteful number, since it uses less digits than its factorization.

420104161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484750.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 420104161 is about 20496.4426425661. The cubic root of 420104161 is about 748.9491422108.

Adding to 420104161 its reverse (161401024), we get a palindrome (581505185).

The spelling of 420104161 in words is "four hundred twenty million, one hundred four thousand, one hundred sixty-one".