1282055040 has 320 divisors, whose sum is σ = 5233995360. Its totient is φ = 292958208.

The previous prime is 1282054999. The next prime is 1282055041. The reversal of 1282055040 is 405502821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1282054995 and 1282055013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1282055041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 361114 + ... + 364646.

Almost surely, 2^1282055040 is an apocalyptic number.

1282055040 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 1282055040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2616997680).

1282055040 is an abundant number, since it is smaller than the sum of its proper divisors (3951940320).

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

1282055040 is an equidigital number, since it uses as much as digits as its factorization.

1282055040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571 (or 3550 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 1282055040 is about 35805.7961788312. The cubic root of 1282055040 is about 1086.3478022788.

Adding to 1282055040 its reverse (405502821), we get a palindrome (1687557861).

The spelling of 1282055040 in words is "one billion, two hundred eighty-two million, fifty-five thousand, forty".