30102120 has 48 divisors (see below), whose sum is σ = 97833060. Its totient is φ = 8027136.

The previous prime is 30102091. The next prime is 30102131. The reversal of 30102120 is 2120103.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30008484 + 93636 = 5478^2 + 306^2 .

It is a super-2 number, since 2×30102120² = 1812275256988800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41449 + ... + 42168.

Almost surely, 2^30102120 is an apocalyptic number.

30102120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30102120 is an abundant number, since it is smaller than the sum of its proper divisors (67730940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30102120 is a wasteful number, since it uses less digits than its factorization.

30102120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83634 (or 83627 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 30102120 is about 5486.5398932296. The cubic root of 30102120 is about 311.0754186188.

Adding to 30102120 its reverse (2120103), we get a palindrome (32222223).

The spelling of 30102120 in words is "thirty million, one hundred two thousand, one hundred twenty".