421098203797 has 4 divisors (see below), whose sum is σ = 430057740096. Its totient is φ = 412138667500.

The previous prime is 421098203737. The next prime is 421098203839. The reversal of 421098203797 is 797302890124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421098203797 - 2²³ = 421089815189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421098203737) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4479768079 + ... + 4479768172.

It is an arithmetic number, because the mean of its divisors is an integer number (107514435024).

Almost surely, 2^421098203797 is an apocalyptic number.

421098203797 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

421098203797 is a deficient number, since it is larger than the sum of its proper divisors (8959536299).

421098203797 is an equidigital number, since it uses as much as digits as its factorization.

421098203797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8959536298.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 421098203797 in words is "four hundred twenty-one billion, ninety-eight million, two hundred three thousand, seven hundred ninety-seven".