421041433 has 4 divisors (see below), whose sum is σ = 421194448. Its totient is φ = 420888420.

The previous prime is 421041421. The next prime is 421041451. The reversal of 421041433 is 334140124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421041433 - 2¹³ = 421033241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421041493) 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, 72303 + ... + 77908.

It is an arithmetic number, because the mean of its divisors is an integer number (105298612).

Almost surely, 2^421041433 is an apocalyptic number.

It is an amenable number.

421041433 is a deficient number, since it is larger than the sum of its proper divisors (153015).

421041433 is a wasteful number, since it uses less digits than its factorization.

421041433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153014.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 421041433 is about 20519.2941642738. The cubic root of 421041433 is about 749.5057086767.

Adding to 421041433 its reverse (334140124), we get a palindrome (755181557).

The spelling of 421041433 in words is "four hundred twenty-one million, forty-one thousand, four hundred thirty-three".