1123451442 has 24 divisors (see below), whose sum is σ = 2436587244. Its totient is φ = 374108064.

The previous prime is 1123451429. The next prime is 1123451449. The reversal of 1123451442 is 2441543211.

1123451442 is a `hidden beast` number, since 112 + 34 + 514 + 4 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 602653401 + 520798041 = 24549^2 + 22821^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1123451449) 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 11 ways as a sum of consecutive naturals, for example, 12573 + ... + 49040.

Almost surely, 2^1123451442 is an apocalyptic number.

1123451442 is an abundant number, since it is smaller than the sum of its proper divisors (1313135802).

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

1123451442 is a wasteful number, since it uses less digits than its factorization.

1123451442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62634 (or 62631 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 1123451442 is about 33517.9271733799. The cubic root of 1123451442 is about 1039.5644878913.

Adding to 1123451442 its reverse (2441543211), we get a palindrome (3564994653).

The spelling of 1123451442 in words is "one billion, one hundred twenty-three million, four hundred fifty-one thousand, four hundred forty-two".