1203420020 has 36 divisors (see below), whose sum is σ = 2777817252. Its totient is φ = 437606400.

The previous prime is 1203419999. The next prime is 1203420061. The reversal of 1203420020 is 200243021.

It can be written as a sum of positive squares in 2 ways, for example, as 940526224 + 262893796 = 30668^2 + 16214^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1203419977 and 1203420004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246221 + ... + 251060.

Almost surely, 2^1203420020 is an apocalyptic number.

1203420020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1203420020 is an abundant number, since it is smaller than the sum of its proper divisors (1574397232).

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

1203420020 is a wasteful number, since it uses less digits than its factorization.

1203420020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497312 (or 497299 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1203420020 is about 34690.3447662314. The cubic root of 1203420020 is about 1063.6671431821.

Adding to 1203420020 its reverse (200243021), we get a palindrome (1403663041).

The spelling of 1203420020 in words is "one billion, two hundred three million, four hundred twenty thousand, twenty".