4995421 has 2 divisors, whose sum is σ = 4995422. Its totient is φ = 4995420.

The previous prime is 4995383. The next prime is 4995427. The reversal of 4995421 is 1245994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4995225 + 196 = 2235^2 + 14^2 .

It is a cyclic number.

It is not a de Polignac number, because 4995421 - 2⁹ = 4994909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4995427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2497710 + 2497711.

It is an arithmetic number, because the mean of its divisors is an integer number (2497711).

Almost surely, 2^4995421 is an apocalyptic number.

It is an amenable number.

4995421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4995421 is an equidigital number, since it uses as much as digits as its factorization.

4995421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 34.

The square root of 4995421 is about 2235.0438474446. The cubic root of 4995421 is about 170.9453788589.

The spelling of 4995421 in words is "four million, nine hundred ninety-five thousand, four hundred twenty-one".