424202051821 has 8 divisors (see below), whose sum is σ = 429037992000. Its totient is φ = 419367659040.

The previous prime is 424202051797. The next prime is 424202051843. The reversal of 424202051821 is 128150202424.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 424202051821 - 2⁵ = 424202051789 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424202051851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169080 + ... + 936478.

It is an arithmetic number, because the mean of its divisors is an integer number (53629749000).

Almost surely, 2^424202051821 is an apocalyptic number.

It is an amenable number.

424202051821 is a deficient number, since it is larger than the sum of its proper divisors (4835940179).

424202051821 is an equidigital number, since it uses as much as digits as its factorization.

424202051821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773699.

The product of its (nonzero) digits is 10240, while the sum is 31.

The spelling of 424202051821 in words is "four hundred twenty-four billion, two hundred two million, fifty-one thousand, eight hundred twenty-one".