1040202120 has 256 divisors, whose sum is σ = 3558297600. Its totient is φ = 241643520.

The previous prime is 1040202077. The next prime is 1040202157. The reversal of 1040202120 is 212020401.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1040202096 and 1040202105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1821435 + ... + 1822005.

It is an arithmetic number, because the mean of its divisors is an integer number (13899600).

Almost surely, 2^1040202120 is an apocalyptic number.

1040202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1040202120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1779148800).

1040202120 is an abundant number, since it is smaller than the sum of its proper divisors (2518095480).

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

1040202120 is a wasteful number, since it uses less digits than its factorization.

1040202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1040202120 is about 32252.1645785209. The cubic root of 1040202120 is about 1013.2250341132.

Adding to 1040202120 its reverse (212020401), we get a palindrome (1252222521).

The spelling of 1040202120 in words is "one billion, forty million, two hundred two thousand, one hundred twenty".