1340143040021 has 8 divisors (see below), whose sum is σ = 1356311417664. Its totient is φ = 1323975188160.

The previous prime is 1340143040017. The next prime is 1340143040023. The reversal of 1340143040021 is 1200403410431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1340143040021 - 2² = 1340143040017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340143040023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8045501 + ... + 8210381.

It is an arithmetic number, because the mean of its divisors is an integer number (169538927208).

Almost surely, 2^{1340143040021} is an apocalyptic number.

It is an amenable number.

1340143040021 is a deficient number, since it is larger than the sum of its proper divisors (16168377643).

1340143040021 is an equidigital number, since it uses as much as digits as its factorization.

1340143040021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262891.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1340143040021 its reverse (1200403410431), we get a palindrome (2540546450452).

The spelling of 1340143040021 in words is "one trillion, three hundred forty billion, one hundred forty-three million, forty thousand, twenty-one".