11420047 has 6 divisors (see below), whose sum is σ = 11584032. Its totient is φ = 11258352.

The previous prime is 11420041. The next prime is 11420051. The reversal of 11420047 is 74002411.

11420047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-11420047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11420041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4258 + ... + 6400.

It is an arithmetic number, because the mean of its divisors is an integer number (1930672).

Almost surely, 2^11420047 is an apocalyptic number.

11420047 is a deficient number, since it is larger than the sum of its proper divisors (163985).

11420047 is an frugal number, since it uses more digits than its factorization.

11420047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289 (or 2216 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 11420047 is about 3379.3560037380. The cubic root of 11420047 is about 225.1935585444.

Adding to 11420047 its reverse (74002411), we get a palindrome (85422458).

The spelling of 11420047 in words is "eleven million, four hundred twenty thousand, forty-seven".