254805642 has 64 divisors (see below), whose sum is σ = 696917760. Its totient is φ = 67200192.

The previous prime is 254805641. The next prime is 254805667. The reversal of 254805642 is 246508452.

It is a happy number.

254805642 is a `hidden beast` number, since 2 + 5 + 4 + 8 + 0 + 5 + 642 = 666.

254805642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 254805597 and 254805606.

It is not an unprimeable number, because it can be changed into a prime (254805641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21013 + ... + 30840.

It is an arithmetic number, because the mean of its divisors is an integer number (10889340).

Almost surely, 2^254805642 is an apocalyptic number.

254805642 is an abundant number, since it is smaller than the sum of its proper divisors (442112118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

254805642 is a wasteful number, since it uses less digits than its factorization.

254805642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51884 (or 51878 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The square root of 254805642 is about 15962.6326776005. The cubic root of 254805642 is about 633.9714201276.

The spelling of 254805642 in words is "two hundred fifty-four million, eight hundred five thousand, six hundred forty-two".