421033444 has 48 divisors (see below), whose sum is σ = 827076096. Its totient is φ = 186220800.

The previous prime is 421033439. The next prime is 421033453. The reversal of 421033444 is 444330124.

It is a super-2 number, since 2×421033444² = 354538321933002272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171264 + ... + 173704.

It is an arithmetic number, because the mean of its divisors is an integer number (17230752).

Almost surely, 2^421033444 is an apocalyptic number.

It is an amenable number.

421033444 is a deficient number, since it is larger than the sum of its proper divisors (406042652).

421033444 is a wasteful number, since it uses less digits than its factorization.

421033444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596 (or 2594 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 421033444 is about 20519.0994929115. The cubic root of 421033444 is about 749.5009681781.

Adding to 421033444 its reverse (444330124), we get a palindrome (865363568).

The spelling of 421033444 in words is "four hundred twenty-one million, thirty-three thousand, four hundred forty-four".