421233425450 has 24 divisors (see below), whose sum is σ = 785193767820. Its totient is φ = 168127865600.

The previous prime is 421233425423. The next prime is 421233425471. The reversal of 421233425450 is 54524332124.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 236873969809 + 184359455641 = 486697^2 + 429371^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 421233425450.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9114335 + ... + 9160434.

Almost surely, 2^421233425450 is an apocalyptic number.

421233425450 is a deficient number, since it is larger than the sum of its proper divisors (363960342370).

421233425450 is a wasteful number, since it uses less digits than its factorization.

421233425450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18275242 (or 18275237 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 421233425450 its reverse (54524332124), we get a palindrome (475757757574).

The spelling of 421233425450 in words is "four hundred twenty-one billion, two hundred thirty-three million, four hundred twenty-five thousand, four hundred fifty".