20141405 has 4 divisors (see below), whose sum is σ = 24169692. Its totient is φ = 16113120.

The previous prime is 20141389. The next prime is 20141417. The reversal of 20141405 is 50414102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9205156 + 10936249 = 3034^2 + 3307^2 .

It is not a de Polignac number, because 20141405 - 2⁴ = 20141389 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2014136 + ... + 2014145.

It is an arithmetic number, because the mean of its divisors is an integer number (6042423).

Almost surely, 2^20141405 is an apocalyptic number.

It is an amenable number.

20141405 is a deficient number, since it is larger than the sum of its proper divisors (4028287).

20141405 is an equidigital number, since it uses as much as digits as its factorization.

20141405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4028286.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 20141405 is about 4487.9176685853. The cubic root of 20141405 is about 272.0799802645.

Adding to 20141405 its reverse (50414102), we get a palindrome (70555507).

The spelling of 20141405 in words is "twenty million, one hundred forty-one thousand, four hundred five".