285057542 has 16 divisors (see below), whose sum is σ = 533094912. Its totient is φ = 111061320.

The previous prime is 285057541. The next prime is 285057557. The reversal of 285057542 is 245750582.

It is a junction number, because it is equal to n+sod(n) for n = 285057496 and 285057505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285057541) 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, 925358 + ... + 925665.

It is an arithmetic number, because the mean of its divisors is an integer number (33318432).

Almost surely, 2^285057542 is an apocalyptic number.

285057542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

285057542 is a deficient number, since it is larger than the sum of its proper divisors (248037370).

285057542 is a wasteful number, since it uses less digits than its factorization.

285057542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851043.

The product of its (nonzero) digits is 112000, while the sum is 38.

The square root of 285057542 is about 16883.6471770764. The cubic root of 285057542 is about 658.1287230112.

The spelling of 285057542 in words is "two hundred eighty-five million, fifty-seven thousand, five hundred forty-two".