30121461 has 12 divisors (see below), whose sum is σ = 43582188. Its totient is φ = 20047104.

The previous prime is 30121453. The next prime is 30121493. The reversal of 30121461 is 16412103.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14676561 + 15444900 = 3831^2 + 3930^2 .

It is not a de Polignac number, because 30121461 - 2³ = 30121453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3571 + ... + 8543.

It is an arithmetic number, because the mean of its divisors is an integer number (3631849).

Almost surely, 2^30121461 is an apocalyptic number.

It is an amenable number.

30121461 is a deficient number, since it is larger than the sum of its proper divisors (13460727).

30121461 is a wasteful number, since it uses less digits than its factorization.

30121461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5652 (or 5649 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 30121461 is about 5488.3021964903. The cubic root of 30121461 is about 311.1420276768.

Adding to 30121461 its reverse (16412103), we get a palindrome (46533564).

The spelling of 30121461 in words is "thirty million, one hundred twenty-one thousand, four hundred sixty-one".