498420468121 has 3 divisors (see below), whose sum is σ = 498421174111. Its totient is φ = 498419762132.

The previous prime is 498420468101. The next prime is 498420468149. The reversal of 498420468121 is 121864024894.

The square root of 498420468121 is 705989.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 464836240521 + 33584227600 = 681789^2 + 183260^2 .

It is not a de Polignac number, because 498420468121 - 2³⁵ = 464060729753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (498420468101) 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 2 ways as a sum of consecutive naturals, for example, 352995 + ... + 1058983.

Almost surely, 2^498420468121 is an apocalyptic number.

498420468121 is the 705989-th square number.

498420468121 is the 352995-th centered octagonal number.

It is an amenable number.

498420468121 is a deficient number, since it is larger than the sum of its proper divisors (705990).

498420468121 is an frugal number, since it uses more digits than its factorization.

498420468121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411978 (or 705989 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 49.

Multiplying 498420468121 by its sum of digits (49), we get a square (24422602937929 = 4941923²).

The spelling of 498420468121 in words is "four hundred ninety-eight billion, four hundred twenty million, four hundred sixty-eight thousand, one hundred twenty-one".