30742115 has 8 divisors (see below), whose sum is σ = 37160640. Its totient is φ = 24413632.

The previous prime is 30742093. The next prime is 30742123. The reversal of 30742115 is 51124703.

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

It is a cyclic number.

It is not a de Polignac number, because 30742115 - 2⁶ = 30742051 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 21755 + ... + 23124.

It is an arithmetic number, because the mean of its divisors is an integer number (4645080).

Almost surely, 2^30742115 is an apocalyptic number.

30742115 is a deficient number, since it is larger than the sum of its proper divisors (6418525).

30742115 is a wasteful number, since it uses less digits than its factorization.

30742115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45021.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 30742115 is about 5544.5572411149. The cubic root of 30742115 is about 313.2645471710.

Adding to 30742115 its reverse (51124703), we get a palindrome (81866818).

The spelling of 30742115 in words is "thirty million, seven hundred forty-two thousand, one hundred fifteen".