1302040071840 has 192 divisors, whose sum is σ = 4272577182720. Its totient is φ = 332927262720.

The previous prime is 1302040071833. The next prime is 1302040071841. The reversal of 1302040071840 is 481700402031.

It is a super-2 number, since 2×1302040071840² (a number of 25 digits) contains 22 as substring.

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 = 1302040071798 and 1302040071807.

It is not an unprimeable number, because it can be changed into a prime (1302040071841) 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, 1220532 + ... + 2023308.

It is an arithmetic number, because the mean of its divisors is an integer number (22253006160).

Almost surely, 2^{1302040071840} is an apocalyptic number.

1302040071840 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 1302040071840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2136288591360).

1302040071840 is an abundant number, since it is smaller than the sum of its proper divisors (2970537110880).

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

1302040071840 is a wasteful number, since it uses less digits than its factorization.

1302040071840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802935 (or 802927 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

Adding to 1302040071840 its reverse (481700402031), we get a palindrome (1783740473871).

The spelling of 1302040071840 in words is "one trillion, three hundred two billion, forty million, seventy-one thousand, eight hundred forty".