101440043 has 6 divisors (see below), whose sum is σ = 102894012. Its totient is φ = 100006340.

The previous prime is 101440021. The next prime is 101440049. The reversal of 101440043 is 340044101.

It is not a de Polignac number, because 101440043 - 2¹² = 101435947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101440049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5021 + ... + 15102.

It is an arithmetic number, because the mean of its divisors is an integer number (17149002).

Almost surely, 2^101440043 is an apocalyptic number.

101440043 is a deficient number, since it is larger than the sum of its proper divisors (1453969).

101440043 is an frugal number, since it uses more digits than its factorization.

101440043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20265 (or 20194 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 101440043 is about 10071.7447842963. The cubic root of 101440043 is about 466.3763024201.

Adding to 101440043 its reverse (340044101), we get a palindrome (441484144).

The spelling of 101440043 in words is "one hundred one million, four hundred forty thousand, forty-three".