1340232140 has 24 divisors (see below), whose sum is σ = 3030987120. Its totient is φ = 494854848.

The previous prime is 1340232133. The next prime is 1340232161. The reversal of 1340232140 is 412320431.

It is a super-3 number, since 3×1340232140³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 2577110 + ... + 2577629.

It is an arithmetic number, because the mean of its divisors is an integer number (126291130).

Almost surely, 2^1340232140 is an apocalyptic number.

1340232140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340232140 is an abundant number, since it is smaller than the sum of its proper divisors (1690754980).

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

1340232140 is a wasteful number, since it uses less digits than its factorization.

1340232140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5154761 (or 5154759 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1340232140 is about 36609.1810889017. The cubic root of 1340232140 is about 1102.5374315203.

Adding to 1340232140 its reverse (412320431), we get a palindrome (1752552571).

The spelling of 1340232140 in words is "one billion, three hundred forty million, two hundred thirty-two thousand, one hundred forty".