4742905 has 4 divisors (see below), whose sum is σ = 5691492. Its totient is φ = 3794320.

The previous prime is 4742897. The next prime is 4742909. The reversal of 4742905 is 5092474.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5092474 = 2 ⋅2546237.

It can be written as a sum of positive squares in 2 ways, for example, as 3055504 + 1687401 = 1748^2 + 1299^2 .

It is not a de Polignac number, because 4742905 - 2³ = 4742897 is a prime.

It is an Ulam number.

It is a Duffinian number.

4742905 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4742909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474286 + ... + 474295.

It is an arithmetic number, because the mean of its divisors is an integer number (1422873).

Almost surely, 2^4742905 is an apocalyptic number.

It is an amenable number.

4742905 is a deficient number, since it is larger than the sum of its proper divisors (948587).

4742905 is an equidigital number, since it uses as much as digits as its factorization.

4742905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948586.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 4742905 is about 2177.8211588650. The cubic root of 4742905 is about 168.0150331408.

It can be divided in two parts, 474 and 2905, that multiplied together give a triangular number (1376970 = T₁₆₅₉).

The spelling of 4742905 in words is "four million, seven hundred forty-two thousand, nine hundred five".