421194845 has 8 divisors (see below), whose sum is σ = 517761720. Its totient is φ = 328737280.

The previous prime is 421194841. The next prime is 421194859. The reversal of 421194845 is 548491124.

It can be written as a sum of positive squares in 4 ways, for example, as 8048569 + 413146276 = 2837^2 + 20326^2 .

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

It is not a de Polignac number, because 421194845 - 2² = 421194841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421194799 and 421194808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421194841) 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, 1027100 + ... + 1027509.

It is an arithmetic number, because the mean of its divisors is an integer number (64720215).

Almost surely, 2^421194845 is an apocalyptic number.

It is an amenable number.

421194845 is a deficient number, since it is larger than the sum of its proper divisors (96566875).

421194845 is a wasteful number, since it uses less digits than its factorization.

421194845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054655.

The product of its digits is 46080, while the sum is 38.

The square root of 421194845 is about 20523.0320615644. The cubic root of 421194845 is about 749.5967283867.

It can be divided in two parts, 42119 and 4845, that added together give a palindrome (46964).

The spelling of 421194845 in words is "four hundred twenty-one million, one hundred ninety-four thousand, eight hundred forty-five".