4276421 has 2 divisors, whose sum is σ = 4276422. Its totient is φ = 4276420.

The previous prime is 4276381. The next prime is 4276429. The reversal of 4276421 is 1246724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3441025 + 835396 = 1855^2 + 914^2 .

It is a cyclic number.

It is not a de Polignac number, because 4276421 - 2¹⁸ = 4014277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4276429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2138210 + 2138211.

It is an arithmetic number, because the mean of its divisors is an integer number (2138211).

Almost surely, 2^4276421 is an apocalyptic number.

It is an amenable number.

4276421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4276421 is an equidigital number, since it uses as much as digits as its factorization.

4276421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 26.

The square root of 4276421 is about 2067.9509181796. The cubic root of 4276421 is about 162.3155587815.

The spelling of 4276421 in words is "four million, two hundred seventy-six thousand, four hundred twenty-one".