1295543040 has 144 divisors (see below), whose sum is σ = 4513936896. Its totient is φ = 314060800.

The previous prime is 1295543017. The next prime is 1295543047. The reversal of 1295543040 is 403455921.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 1295542992 and 1295543010.

It is not an unprimeable number, because it can be changed into a prime (1295543047) 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, 26905 + ... + 57575.

It is an arithmetic number, because the mean of its divisors is an integer number (31346784).

Almost surely, 2^1295543040 is an apocalyptic number.

1295543040 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 1295543040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2256968448).

1295543040 is an abundant number, since it is smaller than the sum of its proper divisors (3218393856).

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

1295543040 is a wasteful number, since it uses less digits than its factorization.

1295543040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30706 (or 30692 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1295543040 is about 35993.6527737878. The cubic root of 1295543040 is about 1090.1441999837.

Adding to 1295543040 its reverse (403455921), we get a palindrome (1698998961).

The spelling of 1295543040 in words is "one billion, two hundred ninety-five million, five hundred forty-three thousand, forty".