30660242 has 8 divisors (see below), whose sum is σ = 47990016. Its totient is φ = 14663572.

The previous prime is 30660241. The next prime is 30660257. The reversal of 30660242 is 24206603.

30660242 = T₉₀₈ + T₉₀₉ + ... + T₉₇₆.

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

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (30660241) 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, 333218 + ... + 333309.

It is an arithmetic number, because the mean of its divisors is an integer number (5998752).

Almost surely, 2^30660242 is an apocalyptic number.

30660242 is a deficient number, since it is larger than the sum of its proper divisors (17329774).

30660242 is a wasteful number, since it uses less digits than its factorization.

30660242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666552.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 30660242 is about 5537.1691323275. The cubic root of 30660242 is about 312.9862025105.

Adding to 30660242 its reverse (24206603), we get a palindrome (54866845).

The spelling of 30660242 in words is "thirty million, six hundred sixty thousand, two hundred forty-two".