423322155 has 24 divisors (see below), whose sum is σ = 735724080. Its totient is φ = 225167040.

The previous prime is 423322129. The next prime is 423322157. The reversal of 423322155 is 551223324.

It is a happy number.

It is not a de Polignac number, because 423322155 - 2⁷ = 423322027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423322157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4645 + ... + 29465.

It is an arithmetic number, because the mean of its divisors is an integer number (30655170).

Almost surely, 2^423322155 is an apocalyptic number.

423322155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

423322155 is a deficient number, since it is larger than the sum of its proper divisors (312401925).

423322155 is a wasteful number, since it uses less digits than its factorization.

423322155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25211 (or 25208 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 423322155 is about 20574.7941666496. The cubic root of 423322155 is about 750.8565946217.

Adding to 423322155 its reverse (551223324), we get a palindrome (974545479).

The spelling of 423322155 in words is "four hundred twenty-three million, three hundred twenty-two thousand, one hundred fifty-five".