1020200240 has 20 divisors (see below), whose sum is σ = 2371965744. Its totient is φ = 408080064.

The previous prime is 1020200239. The next prime is 1020200257. The reversal of 1020200240 is 420020201.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6376172 + ... + 6376331.

Almost surely, 2^1020200240 is an apocalyptic number.

1020200240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020200240 is an abundant number, since it is smaller than the sum of its proper divisors (1351765504).

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

1020200240 is a wasteful number, since it uses less digits than its factorization.

1020200240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12752516 (or 12752510 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 1020200240 is about 31940.5735703040. The cubic root of 1020200240 is about 1006.6885765349.

Adding to 1020200240 its reverse (420020201), we get a palindrome (1440220441).

The spelling of 1020200240 in words is "one billion, twenty million, two hundred thousand, two hundred forty".