421002322 has 16 divisors (see below), whose sum is σ = 684111960. Its totient is φ = 194306736.

The previous prime is 421002319. The next prime is 421002343. The reversal of 421002322 is 223200124.

It can be written as a sum of positive squares in 4 ways, for example, as 2758921 + 418243401 = 1661^2 + 20451^2 .

It is a junction number, because it is equal to n+sod(n) for n = 421002296 and 421002305.

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, 43513 + ... + 52300.

Almost surely, 2^421002322 is an apocalyptic number.

421002322 is a deficient number, since it is larger than the sum of its proper divisors (263109638).

421002322 is an equidigital number, since it uses as much as digits as its factorization.

421002322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95854 (or 95828 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 421002322 is about 20518.3411122829. The cubic root of 421002322 is about 749.4825004893.

Adding to 421002322 its reverse (223200124), we get a palindrome (644202446).

The spelling of 421002322 in words is "four hundred twenty-one million, two thousand, three hundred twenty-two".