421273703 has 4 divisors (see below), whose sum is σ = 421431360. Its totient is φ = 421116048.

The previous prime is 421273693. The next prime is 421273739. The reversal of 421273703 is 307372124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421273703 - 2⁶ = 421273639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421273793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74750 + ... + 80187.

It is an arithmetic number, because the mean of its divisors is an integer number (105357840).

Almost surely, 2^421273703 is an apocalyptic number.

421273703 is a deficient number, since it is larger than the sum of its proper divisors (157657).

421273703 is a wasteful number, since it uses less digits than its factorization.

421273703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157656.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 421273703 is about 20524.9531789965. The cubic root of 421273703 is about 749.6435064285.

The spelling of 421273703 in words is "four hundred twenty-one million, two hundred seventy-three thousand, seven hundred three".