421443420002 has 32 divisors (see below), whose sum is σ = 699329839104. Its totient is φ = 188890606800.

The previous prime is 421443419993. The next prime is 421443420017. The reversal of 421443420002 is 200024344124.

It is a happy number.

It is a super-2 number, since 2×421443420002² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7274 + ... + 918117.

It is an arithmetic number, because the mean of its divisors is an integer number (21854057472).

Almost surely, 2^421443420002 is an apocalyptic number.

421443420002 is a deficient number, since it is larger than the sum of its proper divisors (277886419102).

421443420002 is a wasteful number, since it uses less digits than its factorization.

421443420002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925694.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 421443420002 its reverse (200024344124), we get a palindrome (621467764126).

The spelling of 421443420002 in words is "four hundred twenty-one billion, four hundred forty-three million, four hundred twenty thousand, two".