1340745148421 has 8 divisors (see below), whose sum is σ = 1569652857024. Its totient is φ = 1121180611680.

The previous prime is 1340745148399. The next prime is 1340745148423. The reversal of 1340745148421 is 1248415470431.

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 1340745148421 - 2¹⁰ = 1340745147397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340745148423) 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, 2335792655 + ... + 2335793228.

It is an arithmetic number, because the mean of its divisors is an integer number (196206607128).

Almost surely, 2^{1340745148421} is an apocalyptic number.

It is an amenable number.

1340745148421 is a deficient number, since it is larger than the sum of its proper divisors (228907708603).

1340745148421 is an equidigital number, since it uses as much as digits as its factorization.

1340745148421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671585931.

The product of its (nonzero) digits is 430080, while the sum is 44.

The spelling of 1340745148421 in words is "one trillion, three hundred forty billion, seven hundred forty-five million, one hundred forty-eight thousand, four hundred twenty-one".