1341021043 has 4 divisors (see below), whose sum is σ = 1343075328. Its totient is φ = 1338966760.

The previous prime is 1341021041. The next prime is 1341021053. The reversal of 1341021043 is 3401201431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1341021043 - 2¹ = 1341021041 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 1341021043.

It is not an unprimeable number, because it can be changed into a prime (1341021041) 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, 1026163 + ... + 1027468.

It is an arithmetic number, because the mean of its divisors is an integer number (335768832).

Almost surely, 2^1341021043 is an apocalyptic number.

1341021043 is a deficient number, since it is larger than the sum of its proper divisors (2054285).

1341021043 is an equidigital number, since it uses as much as digits as its factorization.

1341021043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054284.

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

The square root of 1341021043 is about 36619.9541643624. The cubic root of 1341021043 is about 1102.7537185486.

Adding to 1341021043 its reverse (3401201431), we get a palindrome (4742222474).

It can be divided in two parts, 13410 and 21043, that added together give a triangular number (34453 = T₂₆₂).

The spelling of 1341021043 in words is "one billion, three hundred forty-one million, twenty-one thousand, forty-three".