421201404004 has 6 divisors (see below), whose sum is σ = 737102457014. Its totient is φ = 210600702000.

The previous prime is 421201403969. The next prime is 421201404007. The reversal of 421201404004 is 400404102124.

It can be written as a sum of positive squares in only one way, i.e., 352372832100 + 68828571904 = 593610^2 + 262352^2 .

It is a super-3 number, since 3×421201404004³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (421201404007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52650175497 + ... + 52650175504.

Almost surely, 2^421201404004 is an apocalyptic number.

It is an amenable number.

421201404004 is a deficient number, since it is larger than the sum of its proper divisors (315901053010).

421201404004 is a wasteful number, since it uses less digits than its factorization.

421201404004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105300351005 (or 105300351003 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 421201404004 its reverse (400404102124), we get a palindrome (821605506128).

The spelling of 421201404004 in words is "four hundred twenty-one billion, two hundred one million, four hundred four thousand, four".