1202124020420 has 12 divisors (see below), whose sum is σ = 2524460442924. Its totient is φ = 480849608160.

The previous prime is 1202124020351. The next prime is 1202124020431. The reversal of 1202124020420 is 240204212021.

It can be written as a sum of positive squares in 2 ways, for example, as 411504288196 + 790619732224 = 641486^2 + 889168^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 60106201021 = 1202124020420 / (1 + 2 + 0 + 2 + 1 + 2 + 4 + 0 + 2 + 0 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1202124020392 and 1202124020401.

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, 30053100491 + ... + 30053100530.

It is an arithmetic number, because the mean of its divisors is an integer number (210371703577).

Almost surely, 2^{1202124020420} is an apocalyptic number.

1202124020420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202124020420 is an abundant number, since it is smaller than the sum of its proper divisors (1322336422504).

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

1202124020420 is a wasteful number, since it uses less digits than its factorization.

1202124020420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60106201030 (or 60106201028 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 1202124020420 its reverse (240204212021), we get a palindrome (1442328232441).

The spelling of 1202124020420 in words is "one trillion, two hundred two billion, one hundred twenty-four million, twenty thousand, four hundred twenty".