421298413 has 2 divisors, whose sum is σ = 421298414. Its totient is φ = 421298412.

The previous prime is 421298393. The next prime is 421298443. The reversal of 421298413 is 314892124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400120009 + 21178404 = 20003^2 + 4602^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421298413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421298443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210649206 + 210649207.

It is an arithmetic number, because the mean of its divisors is an integer number (210649207).

Almost surely, 2^421298413 is an apocalyptic number.

It is an amenable number.

421298413 is a deficient number, since it is larger than the sum of its proper divisors (1).

421298413 is an equidigital number, since it uses as much as digits as its factorization.

421298413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 34.

The square root of 421298413 is about 20525.5551203859. Note that the first 3 decimals coincide. The cubic root of 421298413 is about 749.6581630351.

It can be divided in two parts, 42 and 1298413, that multiplied together give a triangular number (54533346 = T₁₀₄₄₃).

The spelling of 421298413 in words is "four hundred twenty-one million, two hundred ninety-eight thousand, four hundred thirteen".