30307542 has 8 divisors (see below), whose sum is σ = 60615096. Its totient is φ = 10102512.

The previous prime is 30307513. The next prime is 30307547. The reversal of 30307542 is 24570303.

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

30307542 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30307547) 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, 2525623 + ... + 2525634.

It is an arithmetic number, because the mean of its divisors is an integer number (7576887).

Almost surely, 2^30307542 is an apocalyptic number.

30307542 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.

30307542 is a wasteful number, since it uses less digits than its factorization.

30307542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5051262.

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 30307542 is about 5505.2286056076. The cubic root of 30307542 is about 311.7814256427.

Adding to 30307542 its reverse (24570303), we get a palindrome (54877845).

The spelling of 30307542 in words is "thirty million, three hundred seven thousand, five hundred forty-two".