421403324 has 6 divisors (see below), whose sum is σ = 737455824. Its totient is φ = 210701660.

The previous prime is 421403303. The next prime is 421403357. The reversal of 421403324 is 423304124.

It is a super-2 number, since 2×421403324² = 355161522956497952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421403324.

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, 52675412 + ... + 52675419.

It is an arithmetic number, because the mean of its divisors is an integer number (122909304).

Almost surely, 2^421403324 is an apocalyptic number.

It is an amenable number.

421403324 is a deficient number, since it is larger than the sum of its proper divisors (316052500).

421403324 is a wasteful number, since it uses less digits than its factorization.

421403324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105350835 (or 105350833 counting only the distinct ones).

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

The square root of 421403324 is about 20528.1105803725. The cubic root of 421403324 is about 749.7203840625.

Adding to 421403324 its reverse (423304124), we get a palindrome (844707448).

The spelling of 421403324 in words is "four hundred twenty-one million, four hundred three thousand, three hundred twenty-four".