205124742 has 48 divisors (see below), whose sum is σ = 451097088. Its totient is φ = 67359600.

The previous prime is 205124729. The next prime is 205124747. The reversal of 205124742 is 247421502.

205124742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205124747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 442803 + ... + 443265.

It is an arithmetic number, because the mean of its divisors is an integer number (9397856).

Almost surely, 2^205124742 is an apocalyptic number.

205124742 is an abundant number, since it is smaller than the sum of its proper divisors (245972346).

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

205124742 is a wasteful number, since it uses less digits than its factorization.

205124742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 782 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 205124742 is about 14322.1765803945. The cubic root of 205124742 is about 589.7564272761.

The spelling of 205124742 in words is "two hundred five million, one hundred twenty-four thousand, seven hundred forty-two".