1405344040 has 32 divisors (see below), whose sum is σ = 3173222880. Its totient is φ = 560146752.

The previous prime is 1405344013. The next prime is 1405344067. The reversal of 1405344040 is 404435041.

It is an interprime number because it is at equal distance from previous prime (1405344013) and next prime (1405344067).

It is a junction number, because it is equal to n+sod(n) for n = 1405343996 and 1405344014.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50754 + ... + 73393.

It is an arithmetic number, because the mean of its divisors is an integer number (99163215).

Almost surely, 2^1405344040 is an apocalyptic number.

1405344040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1405344040 is an abundant number, since it is smaller than the sum of its proper divisors (1767878840).

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

1405344040 is a wasteful number, since it uses less digits than its factorization.

1405344040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124441 (or 124437 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1405344040 is about 37487.9185871929. The cubic root of 1405344040 is about 1120.1105439359.

Adding to 1405344040 its reverse (404435041), we get a palindrome (1809779081).

The spelling of 1405344040 in words is "one billion, four hundred five million, three hundred forty-four thousand, forty".