1123342042 has 4 divisors (see below), whose sum is σ = 1685013066. Its totient is φ = 561671020.

The previous prime is 1123342007. The next prime is 1123342061. The reversal of 1123342042 is 2402433211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2402433211 = 61 ⋅39384151.

It can be written as a sum of positive squares in only one way, i.e., 684816561 + 438525481 = 26169^2 + 20941^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280835509 + ... + 280835512.

Almost surely, 2^1123342042 is an apocalyptic number.

1123342042 is a deficient number, since it is larger than the sum of its proper divisors (561671024).

1123342042 is an equidigital number, since it uses as much as digits as its factorization.

1123342042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561671023.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1123342042 is about 33516.2951711552. The cubic root of 1123342042 is about 1039.5307430575.

Adding to 1123342042 its reverse (2402433211), we get a palindrome (3525775253).

The spelling of 1123342042 in words is "one billion, one hundred twenty-three million, three hundred forty-two thousand, forty-two".