30120045 has 8 divisors (see below), whose sum is σ = 48192096. Its totient is φ = 16064016.

The previous prime is 30120023. The next prime is 30120047. The reversal of 30120045 is 54002103.

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

It is not a de Polignac number, because 30120045 - 2¹⁰ = 30119021 is a prime.

It is a super-2 number, since 2×30120045² = 1814434221604050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 2008003 = 30120045 / (3 + 0 + 1 + 2 + 0 + 0 + 4 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1003987 + ... + 1004016.

It is an arithmetic number, because the mean of its divisors is an integer number (6024012).

Almost surely, 2^30120045 is an apocalyptic number.

It is an amenable number.

30120045 is a deficient number, since it is larger than the sum of its proper divisors (18072051).

30120045 is a wasteful number, since it uses less digits than its factorization.

30120045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008011.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 30120045 is about 5488.1731933313. The cubic root of 30120045 is about 311.1371520389.

Adding to 30120045 its reverse (54002103), we get a palindrome (84122148).

The spelling of 30120045 in words is "thirty million, one hundred twenty thousand, forty-five".