421004122 has 32 divisors (see below), whose sum is σ = 802203264. Its totient is φ = 160929600.

The previous prime is 421004063. The next prime is 421004123. The reversal of 421004122 is 221400124.

It is a junction number, because it is equal to n+sod(n) for n = 421004096 and 421004105.

It is not an unprimeable number, because it can be changed into a prime (421004123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17629 + ... + 33952.

It is an arithmetic number, because the mean of its divisors is an integer number (25068852).

Almost surely, 2^421004122 is an apocalyptic number.

421004122 is a deficient number, since it is larger than the sum of its proper divisors (381199142).

421004122 is a wasteful number, since it uses less digits than its factorization.

421004122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51654.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 421004122 is about 20518.3849754312. The cubic root of 421004122 is about 749.4835686280.

Adding to 421004122 its reverse (221400124), we get a palindrome (642404246).

The spelling of 421004122 in words is "four hundred twenty-one million, four thousand, one hundred twenty-two".