1202102020 has 24 divisors (see below), whose sum is σ = 2885045184. Its totient is φ = 412149216.

The previous prime is 1202101987. The next prime is 1202102021. The reversal of 1202102020 is 202012021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1202101988 and 1202102006.

It is not an unprimeable number, because it can be changed into a prime (1202102021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4293082 + ... + 4293361.

It is an arithmetic number, because the mean of its divisors is an integer number (120210216).

Almost surely, 2^1202102020 is an apocalyptic number.

1202102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202102020 is an abundant number, since it is smaller than the sum of its proper divisors (1682943164).

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

1202102020 is a wasteful number, since it uses less digits than its factorization.

1202102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8586459 (or 8586457 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1202102020 is about 34671.3429217848. The cubic root of 1202102020 is about 1063.2786876746.

Adding to 1202102020 its reverse (202012021), we get a palindrome (1404114041).

The spelling of 1202102020 in words is "one billion, two hundred two million, one hundred two thousand, twenty".