1201345243 has 8 divisors (see below), whose sum is σ = 1445227520. Its totient is φ = 975528360.

The previous prime is 1201345231. The next prime is 1201345247. The reversal of 1201345243 is 3425431021.

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 1201345243 - 2¹⁷ = 1201214171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201345247) 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 in 7 ways as a sum of consecutive naturals, for example, 4516203 + ... + 4516468.

It is an arithmetic number, because the mean of its divisors is an integer number (180653440).

Almost surely, 2^1201345243 is an apocalyptic number.

1201345243 is a deficient number, since it is larger than the sum of its proper divisors (243882277).

1201345243 is an equidigital number, since it uses as much as digits as its factorization.

1201345243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9032697.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1201345243 is about 34660.4276228670. The cubic root of 1201345243 is about 1063.0555136681.

Adding to 1201345243 its reverse (3425431021), we get a palindrome (4626776264).

The spelling of 1201345243 in words is "one billion, two hundred one million, three hundred forty-five thousand, two hundred forty-three".