204485742 has 32 divisors (see below), whose sum is σ = 461203200. Its totient is φ = 67143384.

The previous prime is 204485719. The next prime is 204485747. The reversal of 204485742 is 247584402.

It is a junction number, because it is equal to n+sod(n) for n = 204485697 and 204485706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204485747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24642 + ... + 31877.

It is an arithmetic number, because the mean of its divisors is an integer number (14412600).

Almost surely, 2^204485742 is an apocalyptic number.

204485742 is an abundant number, since it is smaller than the sum of its proper divisors (256717458).

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

204485742 is a wasteful number, since it uses less digits than its factorization.

204485742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56597 (or 56591 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 36.

The square root of 204485742 is about 14299.8511181061. The cubic root of 204485742 is about 589.1433915940.

The spelling of 204485742 in words is "two hundred four million, four hundred eighty-five thousand, seven hundred forty-two".