4742391 has 4 divisors (see below), whose sum is σ = 6323192. Its totient is φ = 3161592.

The previous prime is 4742383. The next prime is 4742407. The reversal of 4742391 is 1932474.

It is a happy number.

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

It is not a de Polignac number, because 4742391 - 2³ = 4742383 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4742321) 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, 790396 + ... + 790401.

It is an arithmetic number, because the mean of its divisors is an integer number (1580798).

Almost surely, 2^4742391 is an apocalyptic number.

4742391 is a deficient number, since it is larger than the sum of its proper divisors (1580801).

4742391 is a wasteful number, since it uses less digits than its factorization.

4742391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580800.

The product of its digits is 6048, while the sum is 30.

The square root of 4742391 is about 2177.7031478142. The cubic root of 4742391 is about 168.0089635240.

The spelling of 4742391 in words is "four million, seven hundred forty-two thousand, three hundred ninety-one".