1340254240 has 48 divisors (see below), whose sum is σ = 3409921368. Its totient is φ = 494862336.

The previous prime is 1340254199. The next prime is 1340254259. The reversal of 1340254240 is 424520431.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1078202896 + 262051344 = 32836^2 + 16188^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 320097 + ... + 324256.

Almost surely, 2^1340254240 is an apocalyptic number.

1340254240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340254240 is an abundant number, since it is smaller than the sum of its proper divisors (2069667128).

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

1340254240 is a wasteful number, since it uses less digits than its factorization.

1340254240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644381 (or 644373 counting only the distinct ones).

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

The square root of 1340254240 is about 36609.4829245101. The cubic root of 1340254240 is about 1102.5434916504.

Adding to 1340254240 its reverse (424520431), we get a palindrome (1764774671).

The spelling of 1340254240 in words is "one billion, three hundred forty million, two hundred fifty-four thousand, two hundred forty".