101340405 has 12 divisors (see below), whose sum is σ = 175656780. Its totient is φ = 54048192.

The previous prime is 101340403. The next prime is 101340439. The reversal of 101340405 is 504043101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 59582961 + 41757444 = 7719^2 + 6462^2 .

It is not a de Polignac number, because 101340405 - 2¹ = 101340403 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101340403) 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 11 ways as a sum of consecutive naturals, for example, 1125960 + ... + 1126049.

It is an arithmetic number, because the mean of its divisors is an integer number (14638065).

Almost surely, 2^101340405 is an apocalyptic number.

101340405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101340405 is a deficient number, since it is larger than the sum of its proper divisors (74316375).

101340405 is a wasteful number, since it uses less digits than its factorization.

101340405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2252020 (or 2252017 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 101340405 is about 10066.7971569909. The cubic root of 101340405 is about 466.2235552952.

Adding to 101340405 its reverse (504043101), we get a palindrome (605383506).

The spelling of 101340405 in words is "one hundred one million, three hundred forty thousand, four hundred five".