123642222 has 16 divisors (see below), whose sum is σ = 269764992. Its totient is φ = 37467320.

The previous prime is 123642203. The next prime is 123642251. The reversal of 123642222 is 222246321.

It is a happy number.

It is a super-2 number, since 2×123642222² = 30574798122194568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123642192 and 123642201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 936618 + ... + 936749.

It is an arithmetic number, because the mean of its divisors is an integer number (16860312).

Almost surely, 2^123642222 is an apocalyptic number.

123642222 is an abundant number, since it is smaller than the sum of its proper divisors (146122770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123642222 is a wasteful number, since it uses less digits than its factorization.

123642222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873383.

The product of its digits is 2304, while the sum is 24.

The square root of 123642222 is about 11119.4524145751. The cubic root of 123642222 is about 498.1830346048.

Adding to 123642222 its reverse (222246321), we get a palindrome (345888543).

The spelling of 123642222 in words is "one hundred twenty-three million, six hundred forty-two thousand, two hundred twenty-two".