123222992 has 20 divisors (see below), whose sum is σ = 241429860. Its totient is φ = 60918528.

The previous prime is 123222977. The next prime is 123223003. The reversal of 123222992 is 299222321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10523536 + 112699456 = 3244^2 + 10616^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41843 + ... + 44690.

It is an arithmetic number, because the mean of its divisors is an integer number (12071493).

Almost surely, 2^123222992 is an apocalyptic number.

It is an amenable number.

123222992 is a deficient number, since it is larger than the sum of its proper divisors (118206868).

123222992 is an equidigital number, since it uses as much as digits as its factorization.

123222992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86630 (or 86624 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 123222992 is about 11100.5852097986. The cubic root of 123222992 is about 497.6193388954.

It can be divided in two parts, 1232229 and 92, that added together give a palindrome (1232321).

The spelling of 123222992 in words is "one hundred twenty-three million, two hundred twenty-two thousand, nine hundred ninety-two".