421320043002 has 32 divisors (see below), whose sum is σ = 857593036800. Its totient is φ = 137951583408.

The previous prime is 421320042959. The next prime is 421320043009. The reversal of 421320043002 is 200340023124.

It is a self number, because there is not a number n which added to its sum of digits gives 421320043002.

It is not an unprimeable number, because it can be changed into a prime (421320043009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12508 + ... + 918039.

It is an arithmetic number, because the mean of its divisors is an integer number (26799782400).

Almost surely, 2^421320043002 is an apocalyptic number.

421320043002 is an abundant number, since it is smaller than the sum of its proper divisors (436272993798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421320043002 is a wasteful number, since it uses less digits than its factorization.

421320043002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931890.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 421320043002 its reverse (200340023124), we get a palindrome (621660066126).

The spelling of 421320043002 in words is "four hundred twenty-one billion, three hundred twenty million, forty-three thousand, two".