1121052139 has 2 divisors, whose sum is σ = 1121052140. Its totient is φ = 1121052138.

The previous prime is 1121052137. The next prime is 1121052169. The reversal of 1121052139 is 9312501211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121052139 - 2¹ = 1121052137 is a prime.

Together with 1121052137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1121052137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560526069 + 560526070.

It is an arithmetic number, because the mean of its divisors is an integer number (560526070).

Almost surely, 2^1121052139 is an apocalyptic number.

1121052139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121052139 is an equidigital number, since it uses as much as digits as its factorization.

1121052139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 1121052139 is about 33482.1167042945. The cubic root of 1121052139 is about 1038.8239105909.

It can be divided in two parts, 112105 and 2139, that added together give a square (114244 = 338²).

The spelling of 1121052139 in words is "one billion, one hundred twenty-one million, fifty-two thousand, one hundred thirty-nine".