420743 has 2 divisors, whose sum is σ = 420744. Its totient is φ = 420742.

The previous prime is 420737. The next prime is 420757. The reversal of 420743 is 347024.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426743) 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, 210371 + 210372.

It is an arithmetic number, because the mean of its divisors is an integer number (210372).

2⁴²⁰⁷⁴³ is an apocalyptic number.

420743 is a deficient number, since it is larger than the sum of its proper divisors (1).

420743 is an equidigital number, since it uses as much as digits as its factorization.

420743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 420743 is about 648.6470534890. The cubic root of 420743 is about 74.9328584299.

Adding to 420743 its reverse (347024), we get a palindrome (767767).

It can be divided in two parts, 4207 and 43, that multiplied together give a triangular number (180901 = T₆₀₁).

The spelling of 420743 in words is "four hundred twenty thousand, seven hundred forty-three", and thus it is an iban number.