101039 has 6 divisors (see below), whose sum is σ = 106176. Its totient is φ = 96140.

The previous prime is 101027. The next prime is 101051. The reversal of 101039 is 930101.

101039 = T₈₂ + T₈₃ + ... + T₁₀₄.

It is an interprime number because it is at equal distance from previous prime (101027) and next prime (101051).

It is a de Polignac number, because none of the positive numbers 2^k-101039 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 434 + ... + 624.

It is an arithmetic number, because the mean of its divisors is an integer number (17696).

2¹⁰¹⁰³⁹ is an apocalyptic number.

101039 is a deficient number, since it is larger than the sum of its proper divisors (5137).

101039 is an equidigital number, since it uses as much as digits as its factorization.

101039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 101039 is about 317.8663241050. The cubic root of 101039 is about 46.5760884773.

Subtracting from 101039 its sum of digits (14), we obtain a triangular number (101025 = T₄₄₉).

The spelling of 101039 in words is "one hundred one thousand, thirty-nine".