101642005 has 8 divisors (see below), whose sum is σ = 123341400. Its totient is φ = 80399616.

The previous prime is 101642003. The next prime is 101642017. The reversal of 101642005 is 500246101.

It can be written as a sum of positive squares in 4 ways, for example, as 14760964 + 86881041 = 3842^2 + 9321^2 .

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 101642005 - 2¹ = 101642003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101642003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113760 + ... + 114649.

It is an arithmetic number, because the mean of its divisors is an integer number (15417675).

Almost surely, 2^101642005 is an apocalyptic number.

It is an amenable number.

101642005 is a deficient number, since it is larger than the sum of its proper divisors (21699395).

101642005 is an equidigital number, since it uses as much as digits as its factorization.

101642005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228503.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 101642005 is about 10081.7659663374. The cubic root of 101642005 is about 466.6856077913.

Adding to 101642005 its reverse (500246101), we get a palindrome (601888106).

The spelling of 101642005 in words is "one hundred one million, six hundred forty-two thousand, five".