254421998 has 16 divisors (see below), whose sum is σ = 406702080. Its totient is φ = 119090136.

The previous prime is 254421943. The next prime is 254422001. The reversal of 254421998 is 899124452.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 56678 + ... + 61001.

It is an arithmetic number, because the mean of its divisors is an integer number (25418880).

Almost surely, 2^254421998 is an apocalyptic number.

254421998 is a deficient number, since it is larger than the sum of its proper divisors (152280082).

254421998 is a wasteful number, since it uses less digits than its factorization.

254421998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117751.

The product of its digits is 207360, while the sum is 44.

The square root of 254421998 is about 15950.6112108596. The cubic root of 254421998 is about 633.6530840314.

It can be divided in two parts, 2544 and 21998, that added together give a palindrome (24542).

The spelling of 254421998 in words is "two hundred fifty-four million, four hundred twenty-one thousand, nine hundred ninety-eight".