1223041156 has 6 divisors (see below), whose sum is σ = 2140322030. Its totient is φ = 611520576.

The previous prime is 1223041151. The next prime is 1223041181. The reversal of 1223041156 is 6511403221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1054041156 + 169000000 = 32466^2 + 13000^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1223041156.

It is not an unprimeable number, because it can be changed into a prime (1223041151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152880141 + ... + 152880148.

Almost surely, 2^1223041156 is an apocalyptic number.

It is an amenable number.

1223041156 is a deficient number, since it is larger than the sum of its proper divisors (917280874).

1223041156 is a wasteful number, since it uses less digits than its factorization.

1223041156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305760293 (or 305760291 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1223041156 is about 34972.0053185401. The cubic root of 1223041156 is about 1069.4168528849.

Adding to 1223041156 its reverse (6511403221), we get a palindrome (7734444377).

The spelling of 1223041156 in words is "one billion, two hundred twenty-three million, forty-one thousand, one hundred fifty-six".