421122424 has 8 divisors (see below), whose sum is σ = 789604560. Its totient is φ = 210561208.

The previous prime is 421122421. The next prime is 421122431. The reversal of 421122424 is 424221124.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 421122395 and 421122404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421122421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26320144 + ... + 26320159.

It is an arithmetic number, because the mean of its divisors is an integer number (98700570).

Almost surely, 2^421122424 is an apocalyptic number.

It is an amenable number.

421122424 is a deficient number, since it is larger than the sum of its proper divisors (368482136).

421122424 is a wasteful number, since it uses less digits than its factorization.

421122424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52640309 (or 52640305 counting only the distinct ones).

The product of its digits is 1024, while the sum is 22.

The square root of 421122424 is about 20521.2676021731. The cubic root of 421122424 is about 749.5537635871.

Adding to 421122424 its reverse (424221124), we get a palindrome (845343548).

The spelling of 421122424 in words is "four hundred twenty-one million, one hundred twenty-two thousand, four hundred twenty-four".