421443112 has 8 divisors (see below), whose sum is σ = 790205850. Its totient is φ = 210721552.

The previous prime is 421443079. The next prime is 421443119. The reversal of 421443112 is 211344124.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 359254116 + 62188996 = 18954^2 + 7886^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×421443112² = 355228593304489088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421443119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26340187 + ... + 26340202.

Almost surely, 2^421443112 is an apocalyptic number.

It is an amenable number.

421443112 is a deficient number, since it is larger than the sum of its proper divisors (368762738).

421443112 is a wasteful number, since it uses less digits than its factorization.

421443112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52680395 (or 52680391 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 421443112 is about 20529.0796676324. The cubic root of 421443112 is about 749.7439789846.

Adding to 421443112 its reverse (211344124), we get a palindrome (632787236).

The spelling of 421443112 in words is "four hundred twenty-one million, four hundred forty-three thousand, one hundred twelve".