504945842 has 4 divisors (see below), whose sum is σ = 757418766. Its totient is φ = 252472920.

The previous prime is 504945821. The next prime is 504945901. The reversal of 504945842 is 248549405.

It is a Cunningham number, because it is equal to 22471²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 504945841 + 1 = 22471^2 + 1^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 504945842.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126236459 + ... + 126236462.

Almost surely, 2^504945842 is an apocalyptic number.

504945842 is a deficient number, since it is larger than the sum of its proper divisors (252472924).

504945842 is a wasteful number, since it uses less digits than its factorization.

504945842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252472923.

The product of its (nonzero) digits is 230400, while the sum is 41.

The square root of 504945842 is about 22471.0000222509. Note that the first 4 decimals coincide. The cubic root of 504945842 is about 796.3089558066.

The spelling of 504945842 in words is "five hundred four million, nine hundred forty-five thousand, eight hundred forty-two".