421703 has 2 divisors, whose sum is σ = 421704. Its totient is φ = 421702.

The previous prime is 421699. The next prime is 421709. The reversal of 421703 is 307124.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421703 - 2² = 421699 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210851 + 210852.

It is an arithmetic number, because the mean of its divisors is an integer number (210852).

2⁴²¹⁷⁰³ is an apocalyptic number.

421703 is a deficient number, since it is larger than the sum of its proper divisors (1).

421703 is an equidigital number, since it uses as much as digits as its factorization.

421703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 421703 is about 649.3866336783. The cubic root of 421703 is about 74.9898060219.

Adding to 421703 its reverse (307124), we get a palindrome (728827).

The spelling of 421703 in words is "four hundred twenty-one thousand, seven hundred three", and thus it is an iban number.