47105423 has 4 divisors (see below), whose sum is σ = 47903880. Its totient is φ = 46306968.

The previous prime is 47105417. The next prime is 47105473. The reversal of 47105423 is 32450174.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32450174 = 2 ⋅16225087.

It is a cyclic number.

It is not a de Polignac number, because 47105423 - 2⁴ = 47105407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47105392 and 47105401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47105413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399140 + ... + 399257.

It is an arithmetic number, because the mean of its divisors is an integer number (11975970).

Almost surely, 2^47105423 is an apocalyptic number.

47105423 is a deficient number, since it is larger than the sum of its proper divisors (798457).

47105423 is an equidigital number, since it uses as much as digits as its factorization.

47105423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798456.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 47105423 is about 6863.3390561738. The cubic root of 47105423 is about 361.1522315374.

Adding to 47105423 its reverse (32450174), we get a palindrome (79555597).

The spelling of 47105423 in words is "forty-seven million, one hundred five thousand, four hundred twenty-three".