421035173 has 8 divisors (see below), whose sum is σ = 465677688. Its totient is φ = 378143424.

The previous prime is 421035103. The next prime is 421035203. The reversal of 421035173 is 371530124.

It can be written as a sum of positive squares in 4 ways, for example, as 3323329 + 417711844 = 1823^2 + 20438^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 421035173 - 2²⁴ = 404257957 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 (421035103) 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, 437186 + ... + 438147.

It is an arithmetic number, because the mean of its divisors is an integer number (58209711).

Almost surely, 2^421035173 is an apocalyptic number.

It is an amenable number.

421035173 is a deficient number, since it is larger than the sum of its proper divisors (44642515).

421035173 is a wasteful number, since it uses less digits than its factorization.

421035173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875383.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 421035173 is about 20519.1416243468. The cubic root of 421035173 is about 749.5019941341.

Adding to 421035173 its reverse (371530124), we get a palindrome (792565297).

The spelling of 421035173 in words is "four hundred twenty-one million, thirty-five thousand, one hundred seventy-three".