422331155 has 4 divisors (see below), whose sum is σ = 506797392. Its totient is φ = 337864920.

The previous prime is 422331149. The next prime is 422331157. The reversal of 422331155 is 551133224.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 422331155 - 2⁴ = 422331139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422331157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42233111 + ... + 42233120.

It is an arithmetic number, because the mean of its divisors is an integer number (126699348).

Almost surely, 2^422331155 is an apocalyptic number.

422331155 is a deficient number, since it is larger than the sum of its proper divisors (84466237).

422331155 is an equidigital number, since it uses as much as digits as its factorization.

422331155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84466236.

The product of its digits is 3600, while the sum is 26.

The square root of 422331155 is about 20550.6971901199. The cubic root of 422331155 is about 750.2702167063.

Adding to 422331155 its reverse (551133224), we get a palindrome (973464379).

The spelling of 422331155 in words is "four hundred twenty-two million, three hundred thirty-one thousand, one hundred fifty-five".