307000121 has 4 divisors (see below), whose sum is σ = 308194932. Its totient is φ = 305805312.

The previous prime is 307000117. The next prime is 307000139. The reversal of 307000121 is 121000703.

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 286929721 + 20070400 = 16939^2 + 4480^2 .

It is a cyclic number.

It is not a de Polignac number, because 307000121 - 2² = 307000117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 307000096 and 307000105.

It is not an unprimeable number, because it can be changed into a prime (307000171) 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, 597020 + ... + 597533.

It is an arithmetic number, because the mean of its divisors is an integer number (77048733).

Almost surely, 2^307000121 is an apocalyptic number.

It is an amenable number.

307000121 is a deficient number, since it is larger than the sum of its proper divisors (1194811).

307000121 is a wasteful number, since it uses less digits than its factorization.

307000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194810.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 307000121 is about 17521.4189208523. The cubic root of 307000121 is about 674.5997597987.

Adding to 307000121 its reverse (121000703), we get a palindrome (428000824).

The spelling of 307000121 in words is "three hundred seven million, one hundred twenty-one", and thus it is an aban number.