1340912443 has 8 divisors (see below), whose sum is σ = 1506845088. Its totient is φ = 1183949184.

The previous prime is 1340912429. The next prime is 1340912459. The reversal of 1340912443 is 3442190431.

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 1340912443 - 2¹³ = 1340904251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340912413) 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, 2242030 + ... + 2242627.

It is an arithmetic number, because the mean of its divisors is an integer number (188355636).

Almost surely, 2^1340912443 is an apocalyptic number.

1340912443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1340912443 is a deficient number, since it is larger than the sum of its proper divisors (165932645).

1340912443 is a wasteful number, since it uses less digits than its factorization.

1340912443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4484693.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 1340912443 is about 36618.4713361986. The cubic root of 1340912443 is about 1102.7239496181.

It can be divided in two parts, 13409 and 12443, that added together give a palindrome (25852).

The spelling of 1340912443 in words is "one billion, three hundred forty million, nine hundred twelve thousand, four hundred forty-three".