30121285 has 16 divisors (see below), whose sum is σ = 38269440. Its totient is φ = 22720320.

The previous prime is 30121271. The next prime is 30121303. The reversal of 30121285 is 58212103.

It is not a de Polignac number, because 30121285 - 2¹³ = 30113093 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3820 + ... + 8650.

It is an arithmetic number, because the mean of its divisors is an integer number (2391840).

Almost surely, 2^30121285 is an apocalyptic number.

It is an amenable number.

30121285 is a deficient number, since it is larger than the sum of its proper divisors (8148155).

30121285 is a wasteful number, since it uses less digits than its factorization.

30121285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4908.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 30121285 is about 5488.2861623643. The cubic root of 30121285 is about 311.1414216736.

Adding to 30121285 its reverse (58212103), we get a palindrome (88333388).

The spelling of 30121285 in words is "thirty million, one hundred twenty-one thousand, two hundred eighty-five".