1223242144 has 24 divisors (see below), whose sum is σ = 2485945728. Its totient is φ = 591890880.

The previous prime is 1223242121. The next prime is 1223242151. The reversal of 1223242144 is 4412423221.

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, 615562 + ... + 617545.

It is an arithmetic number, because the mean of its divisors is an integer number (103581072).

Almost surely, 2^1223242144 is an apocalyptic number.

It is an amenable number.

1223242144 is an abundant number, since it is smaller than the sum of its proper divisors (1262703584).

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

1223242144 is a wasteful number, since it uses less digits than its factorization.

1223242144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233148 (or 1233140 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

The square root of 1223242144 is about 34974.8787560443. The cubic root of 1223242144 is about 1069.4754304126.

Adding to 1223242144 its reverse (4412423221), we get a palindrome (5635665365).

The spelling of 1223242144 in words is "one billion, two hundred twenty-three million, two hundred forty-two thousand, one hundred forty-four".