1123907143 has 2 divisors, whose sum is σ = 1123907144. Its totient is φ = 1123907142.

The previous prime is 1123907137. The next prime is 1123907159. The reversal of 1123907143 is 3417093211.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123907143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123907243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561953571 + 561953572.

It is an arithmetic number, because the mean of its divisors is an integer number (561953572).

Almost surely, 2^1123907143 is an apocalyptic number.

1123907143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123907143 is an equidigital number, since it uses as much as digits as its factorization.

1123907143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 1123907143 is about 33524.7243538258. The cubic root of 1123907143 is about 1039.7050269839.

The spelling of 1123907143 in words is "one billion, one hundred twenty-three million, nine hundred seven thousand, one hundred forty-three".