1303120420 has 48 divisors (see below), whose sum is σ = 3143927808. Its totient is φ = 444435840.

The previous prime is 1303120411. The next prime is 1303120421. The reversal of 1303120420 is 240213031.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1303120394 and 1303120403.

It is not an unprimeable number, because it can be changed into a prime (1303120421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2374 + ... + 51106.

It is an arithmetic number, because the mean of its divisors is an integer number (65498496).

Almost surely, 2^1303120420 is an apocalyptic number.

1303120420 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 1303120420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1571963904).

1303120420 is an abundant number, since it is smaller than the sum of its proper divisors (1840807388).

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

1303120420 is a wasteful number, since it uses less digits than its factorization.

1303120420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48940 (or 48938 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1303120420 is about 36098.7592584565. The cubic root of 1303120420 is about 1092.2654171529.

Adding to 1303120420 its reverse (240213031), we get a palindrome (1543333451).

The spelling of 1303120420 in words is "one billion, three hundred three million, one hundred twenty thousand, four hundred twenty".