422790161 has 8 divisors (see below), whose sum is σ = 429624000. Its totient is φ = 415980880.

The previous prime is 422790149. The next prime is 422790227. The reversal of 422790161 is 161097224.

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 422790161 - 2⁶ = 422790097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422790461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30290 + ... + 41988.

It is an arithmetic number, because the mean of its divisors is an integer number (53703000).

Almost surely, 2^422790161 is an apocalyptic number.

It is an amenable number.

422790161 is a deficient number, since it is larger than the sum of its proper divisors (6833839).

422790161 is a wasteful number, since it uses less digits than its factorization.

422790161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12279.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 422790161 is about 20561.8618077255. The cubic root of 422790161 is about 750.5419259570.

The spelling of 422790161 in words is "four hundred twenty-two million, seven hundred ninety thousand, one hundred sixty-one".