11420205 has 8 divisors (see below), whose sum is σ = 18272352. Its totient is φ = 6090768.

The previous prime is 11420203. The next prime is 11420239. The reversal of 11420205 is 50202411.

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

It is not a de Polignac number, because 11420205 - 2¹ = 11420203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 761347 = 11420205 / (1 + 1 + 4 + 2 + 0 + 2 + 0 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11420203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380659 + ... + 380688.

It is an arithmetic number, because the mean of its divisors is an integer number (2284044).

Almost surely, 2^11420205 is an apocalyptic number.

11420205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11420205 is a deficient number, since it is larger than the sum of its proper divisors (6852147).

11420205 is an equidigital number, since it uses as much as digits as its factorization.

11420205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761355.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 11420205 is about 3379.3793808923. The cubic root of 11420205 is about 225.1945970812.

Adding to 11420205 its reverse (50202411), we get a palindrome (61622616).

The spelling of 11420205 in words is "eleven million, four hundred twenty thousand, two hundred five".