1340030240 has 24 divisors (see below), whose sum is σ = 3165821820. Its totient is φ = 536012032.

The previous prime is 1340030239. The next prime is 1340030261. The reversal of 1340030240 is 420300431.

It can be written as a sum of positive squares in 2 ways, for example, as 1304365456 + 35664784 = 36116^2 + 5972^2 .

It is a super-2 number, since 2×1340030240² = 3591362088228915200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4187435 + ... + 4187754.

Almost surely, 2^1340030240 is an apocalyptic number.

1340030240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340030240 is an abundant number, since it is smaller than the sum of its proper divisors (1825791580).

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

1340030240 is an equidigital number, since it uses as much as digits as its factorization.

1340030240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8375204 (or 8375196 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1340030240 is about 36606.4234800397. The cubic root of 1340030240 is about 1102.4820646229.

Adding to 1340030240 its reverse (420300431), we get a palindrome (1760330671).

The spelling of 1340030240 in words is "one billion, three hundred forty million, thirty thousand, two hundred forty".