161039 has 2 divisors, whose sum is σ = 161040. Its totient is φ = 161038.

The previous prime is 161033. The next prime is 161047. The reversal of 161039 is 930161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161039 - 2¹² = 156943 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80519 + 80520.

It is an arithmetic number, because the mean of its divisors is an integer number (80520).

2¹⁶¹⁰³⁹ is an apocalyptic number.

161039 is a deficient number, since it is larger than the sum of its proper divisors (1).

161039 is an equidigital number, since it uses as much as digits as its factorization.

161039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 161039 is about 401.2966483787. The cubic root of 161039 is about 54.4056105445.

The spelling of 161039 in words is "one hundred sixty-one thousand, thirty-nine".