1123042061 has 2 divisors, whose sum is σ = 1123042062. Its totient is φ = 1123042060.

The previous prime is 1123042057. The next prime is 1123042073. The reversal of 1123042061 is 1602403211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 571496836 + 551545225 = 23906^2 + 23485^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123042061 - 2² = 1123042057 is a prime.

It is a super-2 number, since 2×1123042061² = 2522446941550255442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123048061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561521030 + 561521031.

It is an arithmetic number, because the mean of its divisors is an integer number (561521031).

Almost surely, 2^1123042061 is an apocalyptic number.

It is an amenable number.

1123042061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123042061 is an equidigital number, since it uses as much as digits as its factorization.

1123042061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1123042061 is about 33511.8197208090. The cubic root of 1123042061 is about 1039.4382015689.

Adding to 1123042061 its reverse (1602403211), we get a palindrome (2725445272).

The spelling of 1123042061 in words is "one billion, one hundred twenty-three million, forty-two thousand, sixty-one".