420802161 has 16 divisors (see below), whose sum is σ = 612743040. Its totient is φ = 255306240.

The previous prime is 420802141. The next prime is 420802163. The reversal of 420802161 is 161208024.

It is not a de Polignac number, because 420802161 - 2⁶ = 420802097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420802163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73216 + ... + 78753.

It is an arithmetic number, because the mean of its divisors is an integer number (38296440).

Almost surely, 2^420802161 is an apocalyptic number.

It is an amenable number.

420802161 is a deficient number, since it is larger than the sum of its proper divisors (191940879).

420802161 is a wasteful number, since it uses less digits than its factorization.

420802161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152056.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 420802161 is about 20513.4629207260. The cubic root of 420802161 is about 749.3637038779.

The spelling of 420802161 in words is "four hundred twenty million, eight hundred two thousand, one hundred sixty-one".