6078421 has 2 divisors, whose sum is σ = 6078422. Its totient is φ = 6078420.

The previous prime is 6078419. The next prime is 6078427. The reversal of 6078421 is 1248706.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5574321 + 504100 = 2361^2 + 710^2 .

It is a cyclic number.

It is not a de Polignac number, because 6078421 - 2¹ = 6078419 is a prime.

Together with 6078419, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6078421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6078427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3039210 + 3039211.

It is an arithmetic number, because the mean of its divisors is an integer number (3039211).

Almost surely, 2^6078421 is an apocalyptic number.

It is an amenable number.

6078421 is a deficient number, since it is larger than the sum of its proper divisors (1).

6078421 is an equidigital number, since it uses as much as digits as its factorization.

6078421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 6078421 is about 2465.4453958666. The cubic root of 6078421 is about 182.5003039965.

The spelling of 6078421 in words is "six million, seventy-eight thousand, four hundred twenty-one".