421434703 has 8 divisors (see below), whose sum is σ = 423232640. Its totient is φ = 419641560.

The previous prime is 421434691. The next prime is 421434719. The reversal of 421434703 is 307434124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421434703 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 (421434803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359308 + ... + 360478.

It is an arithmetic number, because the mean of its divisors is an integer number (52904080).

Almost surely, 2^421434703 is an apocalyptic number.

421434703 is a deficient number, since it is larger than the sum of its proper divisors (1797937).

421434703 is a wasteful number, since it uses less digits than its factorization.

421434703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 421434703 is about 20528.8748595728. The cubic root of 421434703 is about 749.7389924365.

Adding to 421434703 its reverse (307434124), we get a palindrome (728868827).

The spelling of 421434703 in words is "four hundred twenty-one million, four hundred thirty-four thousand, seven hundred three".