421530143204 has 6 divisors (see below), whose sum is σ = 737677750614. Its totient is φ = 210765071600.

The previous prime is 421530143173. The next prime is 421530143231. The reversal of 421530143204 is 402341035124.

It can be written as a sum of positive squares in only one way, i.e., 229826277604 + 191703865600 = 479402^2 + 437840^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52691267897 + ... + 52691267904.

It is an arithmetic number, because the mean of its divisors is an integer number (122946291769).

Almost surely, 2^421530143204 is an apocalyptic number.

It is an amenable number.

421530143204 is a deficient number, since it is larger than the sum of its proper divisors (316147607410).

421530143204 is a wasteful number, since it uses less digits than its factorization.

421530143204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105382535805 (or 105382535803 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 421530143204 its reverse (402341035124), we get a palindrome (823871178328).

The spelling of 421530143204 in words is "four hundred twenty-one billion, five hundred thirty million, one hundred forty-three thousand, two hundred four".