1125202123 has 2 divisors, whose sum is σ = 1125202124. Its totient is φ = 1125202122.

The previous prime is 1125202121. The next prime is 1125202129. The reversal of 1125202123 is 3212025211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1125202123 - 2¹ = 1125202121 is a prime.

Together with 1125202121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1125202123.

It is not a weakly prime, because it can be changed into another prime (1125202121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562601061 + 562601062.

It is an arithmetic number, because the mean of its divisors is an integer number (562601062).

Almost surely, 2^1125202123 is an apocalyptic number.

1125202123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125202123 is an equidigital number, since it uses as much as digits as its factorization.

1125202123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1125202123 is about 33544.0325989586. The cubic root of 1125202123 is about 1040.1041941343.

Adding to 1125202123 its reverse (3212025211), we get a palindrome (4337227334).

The spelling of 1125202123 in words is "one billion, one hundred twenty-five million, two hundred two thousand, one hundred twenty-three".