307412128421 has 4 divisors (see below), whose sum is σ = 307519957344. Its totient is φ = 307304299500.

The previous prime is 307412128393. The next prime is 307412128489. The reversal of 307412128421 is 124821214703.

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 a de Polignac number, because none of the positive numbers 2^k-307412128421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307412121421) 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, 53910185 + ... + 53915886.

It is an arithmetic number, because the mean of its divisors is an integer number (76879989336).

Almost surely, 2^307412128421 is an apocalyptic number.

It is an amenable number.

307412128421 is a deficient number, since it is larger than the sum of its proper divisors (107828923).

307412128421 is a wasteful number, since it uses less digits than its factorization.

307412128421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107828922.

The product of its (nonzero) digits is 21504, while the sum is 35.

The spelling of 307412128421 in words is "three hundred seven billion, four hundred twelve million, one hundred twenty-eight thousand, four hundred twenty-one".