140341405 has 8 divisors (see below), whose sum is σ = 170717112. Its totient is φ = 110734848.

The previous prime is 140341381. The next prime is 140341441. The reversal of 140341405 is 504143041.

140341405 = 20² + 21² + ... + 749².

140341405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 49196196 + 91145209 = 7014^2 + 9547^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140341405 - 2⁵ = 140341373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191884 + ... + 192613.

It is an arithmetic number, because the mean of its divisors is an integer number (21339639).

Almost surely, 2^140341405 is an apocalyptic number.

It is an amenable number.

140341405 is a deficient number, since it is larger than the sum of its proper divisors (30375707).

140341405 is an equidigital number, since it uses as much as digits as its factorization.

140341405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384575.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 140341405 is about 11846.5777758811. The cubic root of 140341405 is about 519.6711493255.

Adding to 140341405 its reverse (504143041), we get a palindrome (644484446).

The spelling of 140341405 in words is "one hundred forty million, three hundred forty-one thousand, four hundred five".