254991242 has 16 divisors (see below), whose sum is σ = 418774752. Its totient is φ = 115483920.

The previous prime is 254991199. The next prime is 254991257. The reversal of 254991242 is 242199452.

It is a junction number, because it is equal to n+sod(n) for n = 254991196 and 254991205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14828 + ... + 27015.

It is an arithmetic number, because the mean of its divisors is an integer number (26173422).

Almost surely, 2^254991242 is an apocalyptic number.

254991242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

254991242 is a deficient number, since it is larger than the sum of its proper divisors (163783510).

254991242 is a wasteful number, since it uses less digits than its factorization.

254991242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42133.

The product of its digits is 51840, while the sum is 38.

The square root of 254991242 is about 15968.4451966996. The cubic root of 254991242 is about 634.1253106736.

The spelling of 254991242 in words is "two hundred fifty-four million, nine hundred ninety-one thousand, two hundred forty-two".