30140245 has 4 divisors (see below), whose sum is σ = 36168300. Its totient is φ = 24112192.

The previous prime is 30140239. The next prime is 30140321. The reversal of 30140245 is 54204103.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23794884 + 6345361 = 4878^2 + 2519^2 .

It is a cyclic number.

It is not a de Polignac number, because 30140245 - 2¹¹ = 30138197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3014020 + ... + 3014029.

It is an arithmetic number, because the mean of its divisors is an integer number (9042075).

Almost surely, 2^30140245 is an apocalyptic number.

It is an amenable number.

30140245 is a deficient number, since it is larger than the sum of its proper divisors (6028055).

30140245 is an equidigital number, since it uses as much as digits as its factorization.

30140245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6028054.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 30140245 is about 5490.0132058129. The cubic root of 30140245 is about 311.2066911779.

Adding to 30140245 its reverse (54204103), we get a palindrome (84344348).

The spelling of 30140245 in words is "thirty million, one hundred forty thousand, two hundred forty-five".