1125101987 has 2 divisors, whose sum is σ = 1125101988. Its totient is φ = 1125101986.

The previous prime is 1125101969. The next prime is 1125102023. The reversal of 1125101987 is 7891015211.

It is a weak prime.

It is an emirp because it is prime and its reverse (7891015211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1125101987 - 2²⁴ = 1108324771 is a prime.

It is not a weakly prime, because it can be changed into another prime (1125101917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562550993 + 562550994.

It is an arithmetic number, because the mean of its divisors is an integer number (562550994).

Almost surely, 2^1125101987 is an apocalyptic number.

1125101987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125101987 is an equidigital number, since it uses as much as digits as its factorization.

1125101987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 35.

The square root of 1125101987 is about 33542.5399604741. The cubic root of 1125101987 is about 1040.0733389480.

The spelling of 1125101987 in words is "one billion, one hundred twenty-five million, one hundred one thousand, nine hundred eighty-seven".