821141450 has 12 divisors (see below), whose sum is σ = 1527323190. Its totient is φ = 328456560.

The previous prime is 821141437. The next prime is 821141491. The reversal of 821141450 is 54141128.

It can be written as a sum of positive squares in 3 ways, for example, as 429774361 + 391367089 = 20731^2 + 19783^2 .

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 in 5 ways as a sum of consecutive naturals, for example, 8211365 + ... + 8211464.

Almost surely, 2^821141450 is an apocalyptic number.

821141450 is a deficient number, since it is larger than the sum of its proper divisors (706181740).

821141450 is a wasteful number, since it uses less digits than its factorization.

821141450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16422841 (or 16422836 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 821141450 is about 28655.5657770005. The cubic root of 821141450 is about 936.4242641915.

Adding to 821141450 its reverse (54141128), we get a palindrome (875282578).

The spelling of 821141450 in words is "eight hundred twenty-one million, one hundred forty-one thousand, four hundred fifty".