205454042 has 8 divisors (see below), whose sum is σ = 309409632. Its totient is φ = 102317500.

The previous prime is 205454021. The next prime is 205454057. The reversal of 205454042 is 240454502.

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

It is a super-2 number, since 2×205454042² = 84422726748275528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204134 + ... + 205137.

It is an arithmetic number, because the mean of its divisors is an integer number (38676204).

Almost surely, 2^205454042 is an apocalyptic number.

205454042 is a deficient number, since it is larger than the sum of its proper divisors (103955590).

205454042 is a wasteful number, since it uses less digits than its factorization.

205454042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409524.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 205454042 is about 14333.6681278729. The cubic root of 205454042 is about 590.0718499111.

The spelling of 205454042 in words is "two hundred five million, four hundred fifty-four thousand, forty-two".