4507421 has 2 divisors, whose sum is σ = 4507422. Its totient is φ = 4507420.

The previous prime is 4507387. The next prime is 4507429. The reversal of 4507421 is 1247054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4351396 + 156025 = 2086^2 + 395^2 .

It is a cyclic number.

It is not a de Polignac number, because 4507421 - 2¹⁴ = 4491037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4507429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2253710 + 2253711.

It is an arithmetic number, because the mean of its divisors is an integer number (2253711).

Almost surely, 2^4507421 is an apocalyptic number.

It is an amenable number.

4507421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4507421 is an equidigital number, since it uses as much as digits as its factorization.

4507421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 4507421 is about 2123.0687694938. The cubic root of 4507421 is about 165.1870666844.

The spelling of 4507421 in words is "four million, five hundred seven thousand, four hundred twenty-one".