1001120039 has 2 divisors, whose sum is σ = 1001120040. Its totient is φ = 1001120038.

The previous prime is 1001120009. The next prime is 1001120041. The reversal of 1001120039 is 9300211001.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9300211001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001120039 is a prime.

Together with 1001120041, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001119999 and 1001120026.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001120009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500560019 + 500560020.

It is an arithmetic number, because the mean of its divisors is an integer number (500560020).

Almost surely, 2^1001120039 is an apocalyptic number.

1001120039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001120039 is an equidigital number, since it uses as much as digits as its factorization.

1001120039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 1001120039 is about 31640.4810172033. The cubic root of 1001120039 is about 1000.3732070325.

The spelling of 1001120039 in words is "one billion, one million, one hundred twenty thousand, thirty-nine".