1123255642 has 32 divisors (see below), whose sum is σ = 1806520320. Its totient is φ = 522249840.

The previous prime is 1123255607. The next prime is 1123255649. The reversal of 1123255642 is 2465523211.

It is not an unprimeable number, because it can be changed into a prime (1123255649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 708783 + ... + 710365.

It is an arithmetic number, because the mean of its divisors is an integer number (56453760).

Almost surely, 2^1123255642 is an apocalyptic number.

1123255642 is a deficient number, since it is larger than the sum of its proper divisors (683264678).

1123255642 is a wasteful number, since it uses less digits than its factorization.

1123255642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938.

The product of its digits is 14400, while the sum is 31.

The square root of 1123255642 is about 33515.0062210945. The cubic root of 1123255642 is about 1039.5040911101.

Adding to 1123255642 its reverse (2465523211), we get a palindrome (3588778853).

The spelling of 1123255642 in words is "one billion, one hundred twenty-three million, two hundred fifty-five thousand, six hundred forty-two".