254544342404421 has 4 divisors (see below), whose sum is σ = 339392456539232. Its totient is φ = 169696228269612.

The previous prime is 254544342404399. The next prime is 254544342404447. The reversal of 254544342404421 is 124404243445452.

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 not a de Polignac number, because 254544342404421 - 2⁷ = 254544342404293 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 (254544342444421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42424057067401 + ... + 42424057067406.

It is an arithmetic number, because the mean of its divisors is an integer number (84848114134808).

Almost surely, 2^{254544342404421} is an apocalyptic number.

It is an amenable number.

254544342404421 is a deficient number, since it is larger than the sum of its proper divisors (84848114134811).

254544342404421 is an equidigital number, since it uses as much as digits as its factorization.

254544342404421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84848114134810.

The product of its (nonzero) digits is 9830400, while the sum is 48.

Adding to 254544342404421 its reverse (124404243445452), we get a palindrome (378948585849873).

The spelling of 254544342404421 in words is "two hundred fifty-four trillion, five hundred forty-four billion, three hundred forty-two million, four hundred four thousand, four hundred twenty-one".