1356421043 has 2 divisors, whose sum is σ = 1356421044. Its totient is φ = 1356421042.

The previous prime is 1356421037. The next prime is 1356421051. The reversal of 1356421043 is 3401246531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1356421043 - 2¹² = 1356416947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1356420997 and 1356421015.

It is not a weakly prime, because it can be changed into another prime (1356421013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678210521 + 678210522.

It is an arithmetic number, because the mean of its divisors is an integer number (678210522).

Almost surely, 2^1356421043 is an apocalyptic number.

1356421043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356421043 is an equidigital number, since it uses as much as digits as its factorization.

1356421043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1356421043 is about 36829.6218145123. The cubic root of 1356421043 is about 1106.9589250952.

Adding to 1356421043 its reverse (3401246531), we get a palindrome (4757667574).

The spelling of 1356421043 in words is "one billion, three hundred fifty-six million, four hundred twenty-one thousand, forty-three".