4872768421 has 2 divisors, whose sum is σ = 4872768422. Its totient is φ = 4872768420.

The previous prime is 4872768403. The next prime is 4872768457. The reversal of 4872768421 is 1248672784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4663387521 + 209380900 = 68289^2 + 14470^2 .

It is a cyclic number.

It is not a de Polignac number, because 4872768421 - 2¹³ = 4872760229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4872768491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2436384210 + 2436384211.

It is an arithmetic number, because the mean of its divisors is an integer number (2436384211).

Almost surely, 2^4872768421 is an apocalyptic number.

It is an amenable number.

4872768421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4872768421 is an equidigital number, since it uses as much as digits as its factorization.

4872768421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1204224, while the sum is 49.

The square root of 4872768421 is about 69805.2177204541. The cubic root of 4872768421 is about 1695.3469553097.

The spelling of 4872768421 in words is "four billion, eight hundred seventy-two million, seven hundred sixty-eight thousand, four hundred twenty-one".