1340260450 has 24 divisors (see below), whose sum is σ = 2639526372. Its totient is φ = 504568320.

The previous prime is 1340260391. The next prime is 1340260477. The reversal of 1340260450 is 540620431.

It can be written as a sum of positive squares in 6 ways, for example, as 1005333849 + 334926601 = 31707^2 + 18301^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 787539 + ... + 789238.

Almost surely, 2^1340260450 is an apocalyptic number.

1340260450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1340260450 is a deficient number, since it is larger than the sum of its proper divisors (1299265922).

1340260450 is a wasteful number, since it uses less digits than its factorization.

1340260450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576806 (or 1576801 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1340260450 is about 36609.5677385025. The cubic root of 1340260450 is about 1102.5451945076.

Adding to 1340260450 its reverse (540620431), we get a palindrome (1880880881).

The spelling of 1340260450 in words is "one billion, three hundred forty million, two hundred sixty thousand, four hundred fifty".