1125122149 has 2 divisors, whose sum is σ = 1125122150. Its totient is φ = 1125122148.

The previous prime is 1125122093. The next prime is 1125122171. The reversal of 1125122149 is 9412215211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1107691524 + 17430625 = 33282^2 + 4175^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125122149 - 2¹⁹ = 1124597861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1125122179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562561074 + 562561075.

It is an arithmetic number, because the mean of its divisors is an integer number (562561075).

Almost surely, 2^1125122149 is an apocalyptic number.

It is an amenable number.

1125122149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125122149 is an equidigital number, since it uses as much as digits as its factorization.

1125122149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 28.

The square root of 1125122149 is about 33542.8405028554. The cubic root of 1125122149 is about 1040.0795516687.

The spelling of 1125122149 in words is "one billion, one hundred twenty-five million, one hundred twenty-two thousand, one hundred forty-nine".