1122143042 has 4 divisors (see below), whose sum is σ = 1683214566. Its totient is φ = 561071520.

The previous prime is 1122143039. The next prime is 1122143051. The reversal of 1122143042 is 2403412211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2403412211 = 16747 ⋅143513.

It can be written as a sum of positive squares in only one way, i.e., 1057485361 + 64657681 = 32519^2 + 8041^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280535759 + ... + 280535762.

Almost surely, 2^1122143042 is an apocalyptic number.

1122143042 is a deficient number, since it is larger than the sum of its proper divisors (561071524).

1122143042 is an equidigital number, since it uses as much as digits as its factorization.

1122143042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561071523.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1122143042 is about 33498.4035739018. The cubic root of 1122143042 is about 1039.1607634118.

Adding to 1122143042 its reverse (2403412211), we get a palindrome (3525555253).

The spelling of 1122143042 in words is "one billion, one hundred twenty-two million, one hundred forty-three thousand, forty-two".