120630309 has 4 divisors (see below), whose sum is σ = 160840416. Its totient is φ = 80420204.

The previous prime is 120630299. The next prime is 120630329. The reversal of 120630309 is 903036021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120630309 - 2⁹ = 120629797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120630329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20105049 + ... + 20105054.

It is an arithmetic number, because the mean of its divisors is an integer number (40210104).

Almost surely, 2^120630309 is an apocalyptic number.

It is an amenable number.

120630309 is a deficient number, since it is larger than the sum of its proper divisors (40210107).

120630309 is an equidigital number, since it uses as much as digits as its factorization.

120630309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40210106.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 120630309 is about 10983.1830085818. The cubic root of 120630309 is about 494.1045048184.

The spelling of 120630309 in words is "one hundred twenty million, six hundred thirty thousand, three hundred nine".