123022152 has 144 divisors (see below), whose sum is σ = 380518320. Its totient is φ = 37208160.

The previous prime is 123022127. The next prime is 123022153. The reversal of 123022152 is 251220321.

It is a super-2 number, since 2×123022152² = 30268899765422208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (123022153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 234963 + ... + 235485.

Almost surely, 2^123022152 is an apocalyptic number.

123022152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123022152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190259160).

123022152 is an abundant number, since it is smaller than the sum of its proper divisors (257496168).

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

123022152 is a wasteful number, since it uses less digits than its factorization.

123022152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566 (or 539 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 123022152 is about 11091.5351507354. The cubic root of 123022152 is about 497.3488368467.

Adding to 123022152 its reverse (251220321), we get a palindrome (374242473).

The spelling of 123022152 in words is "one hundred twenty-three million, twenty-two thousand, one hundred fifty-two".