1340211043 has 4 divisors (see below), whose sum is σ = 1356358248. Its totient is φ = 1324063840.

The previous prime is 1340211029. The next prime is 1340211121. The reversal of 1340211043 is 3401120431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3401120431 = 59 ⋅57646109.

It is a cyclic number.

It is not a de Polignac number, because 1340211043 - 2⁵ = 1340211011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1340211043.

It is not an unprimeable number, because it can be changed into a prime (1340211023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8073478 + ... + 8073643.

It is an arithmetic number, because the mean of its divisors is an integer number (339089562).

Almost surely, 2^1340211043 is an apocalyptic number.

1340211043 is a deficient number, since it is larger than the sum of its proper divisors (16147205).

1340211043 is an equidigital number, since it uses as much as digits as its factorization.

1340211043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16147204.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1340211043 is about 36608.8929496646. The cubic root of 1340211043 is about 1102.5316463648.

Adding to 1340211043 its reverse (3401120431), we get a palindrome (4741331474).

The spelling of 1340211043 in words is "one billion, three hundred forty million, two hundred eleven thousand, forty-three".