1223254542 has 16 divisors (see below), whose sum is σ = 2575272960. Its totient is φ = 386290872.

The previous prime is 1223254519. The next prime is 1223254547. The reversal of 1223254542 is 2454523221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223254547) 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 7 ways as a sum of consecutive naturals, for example, 5365038 + ... + 5365265.

It is an arithmetic number, because the mean of its divisors is an integer number (160954560).

Almost surely, 2^1223254542 is an apocalyptic number.

1223254542 is an abundant number, since it is smaller than the sum of its proper divisors (1352018418).

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

1223254542 is a wasteful number, since it uses less digits than its factorization.

1223254542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10730327.

The product of its digits is 19200, while the sum is 30.

The square root of 1223254542 is about 34975.0559970960. The cubic root of 1223254542 is about 1069.4790435734.

Adding to 1223254542 its reverse (2454523221), we get a palindrome (3677777763).

The spelling of 1223254542 in words is "one billion, two hundred twenty-three million, two hundred fifty-four thousand, five hundred forty-two".