30539742 has 8 divisors (see below), whose sum is σ = 61079496. Its totient is φ = 10179912.

The previous prime is 30539737. The next prime is 30539749. The reversal of 30539742 is 24793503.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

30539742 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30539749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2544973 + ... + 2544984.

It is an arithmetic number, because the mean of its divisors is an integer number (7634937).

Almost surely, 2^30539742 is an apocalyptic number.

30539742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30539742 is a wasteful number, since it uses less digits than its factorization.

30539742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5089962.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 30539742 is about 5526.2774088893. The cubic root of 30539742 is about 312.5756343861.

The spelling of 30539742 in words is "thirty million, five hundred thirty-nine thousand, seven hundred forty-two".