421421244 has 24 divisors (see below), whose sum is σ = 983657808. Its totient is φ = 140424960.

The previous prime is 421421239. The next prime is 421421251. The reversal of 421421244 is 442124124.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52114 + ... + 59654.

It is an arithmetic number, because the mean of its divisors is an integer number (40985742).

Almost surely, 2^421421244 is an apocalyptic number.

It is an amenable number.

421421244 is an abundant number, since it is smaller than the sum of its proper divisors (562236564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421421244 is a wasteful number, since it uses less digits than its factorization.

421421244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12205 (or 12203 counting only the distinct ones).

The product of its digits is 2048, while the sum is 24.

The square root of 421421244 is about 20528.5470503881. The cubic root of 421421244 is about 749.7310110937.

Adding to 421421244 its reverse (442124124), we get a palindrome (863545368).

The spelling of 421421244 in words is "four hundred twenty-one million, four hundred twenty-one thousand, two hundred forty-four".