421443302 has 16 divisors (see below), whose sum is σ = 730594080. Its totient is φ = 178588608.

The previous prime is 421443299. The next prime is 421443353. The reversal of 421443302 is 203344124.

It is a super-2 number, since 2×421443302² = 355228913601326408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167873 + ... + 170364.

It is an arithmetic number, because the mean of its divisors is an integer number (45662130).

Almost surely, 2^421443302 is an apocalyptic number.

421443302 is a deficient number, since it is larger than the sum of its proper divisors (309150778).

421443302 is a wasteful number, since it uses less digits than its factorization.

421443302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338335.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 421443302 is about 20529.0842952139. The cubic root of 421443302 is about 749.7440916541.

Adding to 421443302 its reverse (203344124), we get a palindrome (624787426).

The spelling of 421443302 in words is "four hundred twenty-one million, four hundred forty-three thousand, three hundred two".