30742339 has 4 divisors (see below), whose sum is σ = 30754360. Its totient is φ = 30730320.

The previous prime is 30742303. The next prime is 30742357. The reversal of 30742339 is 93324703.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 93324703 = 5861 ⋅15923.

It is a cyclic number.

It is not a de Polignac number, because 30742339 - 2¹¹ = 30740291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30742339.

It is not an unprimeable number, because it can be changed into a prime (30742379) 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, 474 + ... + 7855.

It is an arithmetic number, because the mean of its divisors is an integer number (7688590).

Almost surely, 2^30742339 is an apocalyptic number.

30742339 is a deficient number, since it is larger than the sum of its proper divisors (12021).

30742339 is an equidigital number, since it uses as much as digits as its factorization.

30742339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12020.

The product of its (nonzero) digits is 13608, while the sum is 31.

The square root of 30742339 is about 5544.5774410680. The cubic root of 30742339 is about 313.2653080283.

The spelling of 30742339 in words is "thirty million, seven hundred forty-two thousand, three hundred thirty-nine".