204742494 has 96 divisors (see below), whose sum is σ = 505945440. Its totient is φ = 59270400.

The previous prime is 204742493. The next prime is 204742511. The reversal of 204742494 is 494247402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204742493) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1039204 + ... + 1039400.

It is an arithmetic number, because the mean of its divisors is an integer number (5270265).

Almost surely, 2^204742494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204742494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252972720).

204742494 is an abundant number, since it is smaller than the sum of its proper divisors (301202946).

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

204742494 is a wasteful number, since it uses less digits than its factorization.

204742494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 204742494 is about 14308.8257379842. The cubic root of 204742494 is about 589.3898643274.

Adding to 204742494 its reverse (494247402), we get a palindrome (698989896).

The spelling of 204742494 in words is "two hundred four million, seven hundred forty-two thousand, four hundred ninety-four".