421044763 has 4 divisors (see below), whose sum is σ = 445812120. Its totient is φ = 396277408.

The previous prime is 421044749. The next prime is 421044779. The reversal of 421044763 is 367440124.

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 421044763 - 2¹³ = 421036571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421044163) 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, 12383653 + ... + 12383686.

It is an arithmetic number, because the mean of its divisors is an integer number (111453030).

Almost surely, 2^421044763 is an apocalyptic number.

421044763 is a deficient number, since it is larger than the sum of its proper divisors (24767357).

421044763 is a wasteful number, since it uses less digits than its factorization.

421044763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24767356.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 421044763 is about 20519.3753072553. The cubic root of 421044763 is about 749.5076846085.

Adding to 421044763 its reverse (367440124), we get a palindrome (788484887).

The spelling of 421044763 in words is "four hundred twenty-one million, forty-four thousand, seven hundred sixty-three".