30642243 has 8 divisors (see below), whose sum is σ = 40888848. Its totient is φ = 20411904.

The previous prime is 30642239. The next prime is 30642247. The reversal of 30642243 is 34224603.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30642239) and next prime (30642247).

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

It is not a de Polignac number, because 30642243 - 2² = 30642239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30642247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1371 + ... + 7947.

It is an arithmetic number, because the mean of its divisors is an integer number (5111106).

Almost surely, 2^30642243 is an apocalyptic number.

30642243 is a deficient number, since it is larger than the sum of its proper divisors (10246605).

30642243 is a wasteful number, since it uses less digits than its factorization.

30642243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8133.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 30642243 is about 5535.5436047420. The cubic root of 30642243 is about 312.9249446619.

Adding to 30642243 its reverse (34224603), we get a palindrome (64866846).

The spelling of 30642243 in words is "thirty million, six hundred forty-two thousand, two hundred forty-three".