1302020545440 has 192 divisors, whose sum is σ = 4114030435200. Its totient is φ = 346135056384.

The previous prime is 1302020545417. The next prime is 1302020545447. The reversal of 1302020545440 is 445450202031.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1302020545398 and 1302020545407.

It is not an unprimeable number, because it can be changed into a prime (1302020545447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229670926 + ... + 229676594.

It is an arithmetic number, because the mean of its divisors is an integer number (21427241850).

Almost surely, 2^{1302020545440} is an apocalyptic number.

1302020545440 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 1302020545440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2057015217600).

1302020545440 is an abundant number, since it is smaller than the sum of its proper divisors (2812009889760).

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

1302020545440 is a wasteful number, since it uses less digits than its factorization.

1302020545440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7079 (or 7071 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 1302020545440 its reverse (445450202031), we get a palindrome (1747470747471).

The spelling of 1302020545440 in words is "one trillion, three hundred two billion, twenty million, five hundred forty-five thousand, four hundred forty".