101242005 has 16 divisors (see below), whose sum is σ = 164644224. Its totient is φ = 53110080.

The previous prime is 101241983. The next prime is 101242019. The reversal of 101242005 is 500242101.

It is not a de Polignac number, because 101242005 - 2⁶ = 101241941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 54409 + ... + 56238.

It is an arithmetic number, because the mean of its divisors is an integer number (10290264).

Almost surely, 2^101242005 is an apocalyptic number.

101242005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101242005 is a deficient number, since it is larger than the sum of its proper divisors (63402219).

101242005 is a wasteful number, since it uses less digits than its factorization.

101242005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110716.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 101242005 is about 10061.9086161622. The cubic root of 101242005 is about 466.0726077559.

Adding to 101242005 its reverse (500242101), we get a palindrome (601484106).

The spelling of 101242005 in words is "one hundred one million, two hundred forty-two thousand, five".