421320244 has 6 divisors (see below), whose sum is σ = 737310434. Its totient is φ = 210660120.

The previous prime is 421320217. The next prime is 421320271. The reversal of 421320244 is 442023124.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (421320217) and next prime (421320271).

It can be written as a sum of positive squares in only one way, i.e., 339959844 + 81360400 = 18438^2 + 9020^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52665027 + ... + 52665034.

Almost surely, 2^421320244 is an apocalyptic number.

It is an amenable number.

421320244 is a deficient number, since it is larger than the sum of its proper divisors (315990190).

421320244 is a wasteful number, since it uses less digits than its factorization.

421320244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105330065 (or 105330063 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 421320244 is about 20526.0869139736. The cubic root of 421320244 is about 749.6711115013.

Adding to 421320244 its reverse (442023124), we get a palindrome (863343368).

The spelling of 421320244 in words is "four hundred twenty-one million, three hundred twenty thousand, two hundred forty-four".