421573443 has 4 divisors (see below), whose sum is σ = 562097928. Its totient is φ = 281048960.

The previous prime is 421573441. The next prime is 421573457. The reversal of 421573443 is 344375124.

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 421573443 - 2¹ = 421573441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421573441) 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, 70262238 + ... + 70262243.

It is an arithmetic number, because the mean of its divisors is an integer number (140524482).

Almost surely, 2^421573443 is an apocalyptic number.

421573443 is a deficient number, since it is larger than the sum of its proper divisors (140524485).

421573443 is a wasteful number, since it uses less digits than its factorization.

421573443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140524484.

The product of its digits is 40320, while the sum is 33.

The square root of 421573443 is about 20532.2537243236. The cubic root of 421573443 is about 749.8212569602.

The spelling of 421573443 in words is "four hundred twenty-one million, five hundred seventy-three thousand, four hundred forty-three".