101440026 has 20 divisors (see below), whose sum is σ = 227301162. Its totient is φ = 33813288.

The previous prime is 101440021. The next prime is 101440049. The reversal of 101440026 is 620044101.

It can be written as a sum of positive squares in only one way, i.e., 93605625 + 7834401 = 9675^2 + 2799^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 101439990 and 101440008.

It is not an unprimeable number, because it can be changed into a prime (101440021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 312925 + ... + 313248.

Almost surely, 2^101440026 is an apocalyptic number.

101440026 is an abundant number, since it is smaller than the sum of its proper divisors (125861136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101440026 is an equidigital number, since it uses as much as digits as its factorization.

101440026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626187 (or 626178 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 101440026 is about 10071.7439403511. The cubic root of 101440026 is about 466.3762763673.

Adding to 101440026 its reverse (620044101), we get a palindrome (721484127).

The spelling of 101440026 in words is "one hundred one million, four hundred forty thousand, twenty-six".