204156105 has 8 divisors (see below), whose sum is σ = 326649792. Its totient is φ = 108883248.

The previous prime is 204156103. The next prime is 204156137. The reversal of 204156105 is 501651402.

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

It is not a de Polignac number, because 204156105 - 2¹ = 204156103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204156103) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6805189 + ... + 6805218.

It is an arithmetic number, because the mean of its divisors is an integer number (40831224).

Almost surely, 2^204156105 is an apocalyptic number.

It is an amenable number.

204156105 is a deficient number, since it is larger than the sum of its proper divisors (122493687).

204156105 is a wasteful number, since it uses less digits than its factorization.

204156105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13610415.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 204156105 is about 14288.3205801102. The cubic root of 204156105 is about 588.8266492045.

The spelling of 204156105 in words is "two hundred four million, one hundred fifty-six thousand, one hundred five".