1361275040 has 48 divisors (see below), whose sum is σ = 3223222632. Its totient is φ = 543289344.

The previous prime is 1361275021. The next prime is 1361275043. The reversal of 1361275040 is 405721631.

It can be written as a sum of positive squares in 4 ways, for example, as 1357480336 + 3794704 = 36844^2 + 1948^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1361274994 and 1361275012.

It is not an unprimeable number, because it can be changed into a prime (1361275043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63812 + ... + 82428.

Almost surely, 2^1361275040 is an apocalyptic number.

1361275040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1361275040 is an abundant number, since it is smaller than the sum of its proper divisors (1861947592).

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

1361275040 is a wasteful number, since it uses less digits than its factorization.

1361275040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19089 (or 19081 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 1361275040 is about 36895.4609674415. The cubic root of 1361275040 is about 1108.2777827071.

Adding to 1361275040 its reverse (405721631), we get a palindrome (1766996671).

The spelling of 1361275040 in words is "one billion, three hundred sixty-one million, two hundred seventy-five thousand, forty".