505257942 has 16 divisors (see below), whose sum is σ = 1154875392. Its totient is φ = 144359400.

The previous prime is 505257919. The next prime is 505257971. The reversal of 505257942 is 249752505.

It is a self number, because there is not a number n which added to its sum of digits gives 505257942.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6014934 + ... + 6015017.

It is an arithmetic number, because the mean of its divisors is an integer number (72179712).

Almost surely, 2^505257942 is an apocalyptic number.

505257942 is an abundant number, since it is smaller than the sum of its proper divisors (649617450).

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

505257942 is a wasteful number, since it uses less digits than its factorization.

505257942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12029963.

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 505257942 is about 22477.9434557524. The cubic root of 505257942 is about 796.4729845123.

The spelling of 505257942 in words is "five hundred five million, two hundred fifty-seven thousand, nine hundred forty-two".