205439254 has 8 divisors (see below), whose sum is σ = 326285928. Its totient is φ = 96677280.

The previous prime is 205439249. The next prime is 205439261. The reversal of 205439254 is 452934502.

205439254 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 6042331 = 205439254 / (2 + 0 + 5 + 4 + 3 + 9 + 2 + 5 + 4).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3021132 + ... + 3021199.

It is an arithmetic number, because the mean of its divisors is an integer number (40785741).

Almost surely, 2^205439254 is an apocalyptic number.

205439254 is a deficient number, since it is larger than the sum of its proper divisors (120846674).

205439254 is a wasteful number, since it uses less digits than its factorization.

205439254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6042350.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 205439254 is about 14333.1522701742. The cubic root of 205439254 is about 590.0576923380.

The spelling of 205439254 in words is "two hundred five million, four hundred thirty-nine thousand, two hundred fifty-four".