101019139 has 8 divisors (see below), whose sum is σ = 111730640. Its totient is φ = 90727776.

The previous prime is 101019137. The next prime is 101019157. The reversal of 101019139 is 931910101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101019139 - 2¹ = 101019137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101019131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104529 + ... + 105490.

It is an arithmetic number, because the mean of its divisors is an integer number (13966330).

Almost surely, 2^101019139 is an apocalyptic number.

101019139 is a deficient number, since it is larger than the sum of its proper divisors (10711501).

101019139 is a wasteful number, since it uses less digits than its factorization.

101019139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210069.

The product of its (nonzero) digits is 243, while the sum is 25.

The square root of 101019139 is about 10050.8277768550. The cubic root of 101019139 is about 465.7303649308.

The spelling of 101019139 in words is "one hundred one million, nineteen thousand, one hundred thirty-nine".