205245542 has 16 divisors (see below), whose sum is σ = 315187200. Its totient is φ = 100206600.

The previous prime is 205245529. The next prime is 205245571. The reversal of 205245542 is 245542502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12059 + ... + 23577.

It is an arithmetic number, because the mean of its divisors is an integer number (19699200).

Almost surely, 2^205245542 is an apocalyptic number.

205245542 is a deficient number, since it is larger than the sum of its proper divisors (109941658).

205245542 is a wasteful number, since it uses less digits than its factorization.

205245542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11731.

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 205245542 is about 14326.3931957768. The cubic root of 205245542 is about 589.8721756985.

The spelling of 205245542 in words is "two hundred five million, two hundred forty-five thousand, five hundred forty-two".