101642471 has 4 divisors (see below), whose sum is σ = 116162832. Its totient is φ = 87122112.

The previous prime is 101642449. The next prime is 101642491. The reversal of 101642471 is 174246101.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 101642471 - 2¹⁸ = 101380327 is a prime.

It is a super-3 number, since 3×101642471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101642471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101642491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7260170 + ... + 7260183.

It is an arithmetic number, because the mean of its divisors is an integer number (29040708).

Almost surely, 2^101642471 is an apocalyptic number.

101642471 is a deficient number, since it is larger than the sum of its proper divisors (14520361).

101642471 is an equidigital number, since it uses as much as digits as its factorization.

101642471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14520360.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 101642471 is about 10081.7890773414. The cubic root of 101642471 is about 466.6863209976.

Adding to 101642471 its reverse (174246101), we get a palindrome (275888572).

The spelling of 101642471 in words is "one hundred one million, six hundred forty-two thousand, four hundred seventy-one".