1000520042 has 16 divisors (see below), whose sum is σ = 1532473992. Its totient is φ = 489795840.

The previous prime is 1000520041. The next prime is 1000520063. The reversal of 1000520042 is 2400250001.

It can be written as a sum of positive squares in 4 ways, for example, as 954130321 + 46389721 = 30889^2 + 6811^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1000519999 and 1000520026.

It is not an unprimeable number, because it can be changed into a prime (1000520041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5009 + ... + 45012.

Almost surely, 2^1000520042 is an apocalyptic number.

1000520042 is a deficient number, since it is larger than the sum of its proper divisors (531953950).

1000520042 is a wasteful number, since it uses less digits than its factorization.

1000520042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50233.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 1000520042 is about 31630.9981189339. The cubic root of 1000520042 is about 1000.1733172927.

Adding to 1000520042 its reverse (2400250001), we get a palindrome (3400770043).

The spelling of 1000520042 in words is "one billion, five hundred twenty thousand, forty-two".