123542224 has 40 divisors (see below), whose sum is σ = 262170720. Its totient is φ = 56047488.

The previous prime is 123542203. The next prime is 123542231. The reversal of 123542224 is 422245321.

It is a super-2 number, since 2×123542224² = 30525362221732352, which contains 22 as substring.

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, 7239 + ... + 17305.

It is an arithmetic number, because the mean of its divisors is an integer number (6554268).

Almost surely, 2^123542224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123542224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131085360).

123542224 is an abundant number, since it is smaller than the sum of its proper divisors (138628496).

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

123542224 is a wasteful number, since it uses less digits than its factorization.

123542224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10147 (or 10141 counting only the distinct ones).

The product of its digits is 3840, while the sum is 25.

The square root of 123542224 is about 11114.9549706690. The cubic root of 123542224 is about 498.0486933780.

Adding to 123542224 its reverse (422245321), we get a palindrome (545787545).

The spelling of 123542224 in words is "one hundred twenty-three million, five hundred forty-two thousand, two hundred twenty-four".