30605121 has 48 divisors (see below), whose sum is σ = 49008960. Its totient is φ = 19051200.

The previous prime is 30605089. The next prime is 30605123. The reversal of 30605121 is 12150603.

It is not a de Polignac number, because 30605121 - 2⁵ = 30605089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30605094 and 30605103.

It is not an unprimeable number, because it can be changed into a prime (30605123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 302971 + ... + 303071.

It is an arithmetic number, because the mean of its divisors is an integer number (1021020).

Almost surely, 2^30605121 is an apocalyptic number.

It is an amenable number.

30605121 is a deficient number, since it is larger than the sum of its proper divisors (18403839).

30605121 is a wasteful number, since it uses less digits than its factorization.

30605121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 30605121 is about 5532.1895303758. The cubic root of 30605121 is about 312.7985277423.

Adding to 30605121 its reverse (12150603), we get a palindrome (42755724).

The spelling of 30605121 in words is "thirty million, six hundred five thousand, one hundred twenty-one".