1000245020 has 24 divisors (see below), whose sum is σ = 2151748368. Its totient is φ = 390339200.

The previous prime is 1000245017. The next prime is 1000245041. The reversal of 1000245020 is 205420001.

It is a junction number, because it is equal to n+sod(n) for n = 1000244986 and 1000245004.

It is a congruent number.

It is an unprimeable number.

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, 609086 + ... + 610725.

It is an arithmetic number, because the mean of its divisors is an integer number (89656182).

Almost surely, 2^1000245020 is an apocalyptic number.

1000245020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000245020 is an abundant number, since it is smaller than the sum of its proper divisors (1151503348).

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

1000245020 is a wasteful number, since it uses less digits than its factorization.

1000245020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219861 (or 1219859 counting only the distinct ones).

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

The square root of 1000245020 is about 31626.6504707659. The cubic root of 1000245020 is about 1000.0816666637.

Adding to 1000245020 its reverse (205420001), we get a palindrome (1205665021).

The spelling of 1000245020 in words is "one billion, two hundred forty-five thousand, twenty".