1354240243 has 4 divisors (see below), whose sum is σ = 1364903680. Its totient is φ = 1343576808.

The previous prime is 1354240171. The next prime is 1354240271. The reversal of 1354240243 is 3420424531.

It is a happy number.

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 1354240243 - 2¹³ = 1354232051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1354240273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5331528 + ... + 5331781.

It is an arithmetic number, because the mean of its divisors is an integer number (341225920).

Almost surely, 2^1354240243 is an apocalyptic number.

1354240243 is a deficient number, since it is larger than the sum of its proper divisors (10663437).

1354240243 is a wasteful number, since it uses less digits than its factorization.

1354240243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10663436.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 1354240243 is about 36800.0033016303. The cubic root of 1354240243 is about 1106.3653653166.

Adding to 1354240243 its reverse (3420424531), we get a palindrome (4774664774).

The spelling of 1354240243 in words is "one billion, three hundred fifty-four million, two hundred forty thousand, two hundred forty-three".