100140071 has 4 divisors (see below), whose sum is σ = 100167144. Its totient is φ = 100113000.

The previous prime is 100140067. The next prime is 100140107. The reversal of 100140071 is 170041001.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 100140071 - 2² = 100140067 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100140011) 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, 6905 + ... + 15746.

It is an arithmetic number, because the mean of its divisors is an integer number (25041786).

Almost surely, 2^100140071 is an apocalyptic number.

100140071 is a deficient number, since it is larger than the sum of its proper divisors (27073).

100140071 is an equidigital number, since it uses as much as digits as its factorization.

100140071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27072.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 100140071 is about 10007.0010992305. The cubic root of 100140071 is about 464.3754995837.

Adding to 100140071 its reverse (170041001), we get a palindrome (270181072).

The spelling of 100140071 in words is "one hundred million, one hundred forty thousand, seventy-one".