1340740140 has 48 divisors (see below), whose sum is σ = 3855540192. Its totient is φ = 347867136.

The previous prime is 1340740123. The next prime is 1340740147. The reversal of 1340740140 is 410470431.

It is a self number, because there is not a number n which added to its sum of digits gives 1340740140.

It is not an unprimeable number, because it can be changed into a prime (1340740147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299749 + ... + 304188.

It is an arithmetic number, because the mean of its divisors is an integer number (80323754).

Almost surely, 2^1340740140 is an apocalyptic number.

1340740140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340740140 is an abundant number, since it is smaller than the sum of its proper divisors (2514800052).

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

1340740140 is a wasteful number, since it uses less digits than its factorization.

1340740140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603986 (or 603984 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 1340740140 is about 36616.1185818486. The cubic root of 1340740140 is about 1102.6767154171.

The spelling of 1340740140 in words is "one billion, three hundred forty million, seven hundred forty thousand, one hundred forty".