1201204243 has 12 divisors (see below), whose sum is σ = 1240022560. Its totient is φ = 1163406816.

The previous prime is 1201204237. The next prime is 1201204247. The reversal of 1201204243 is 3424021021.

It is a de Polignac number, because none of the positive numbers 2^k-1201204243 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 1201204243.

It is not an unprimeable number, because it can be changed into a prime (1201204247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 219205 + ... + 224617.

Almost surely, 2^1201204243 is an apocalyptic number.

1201204243 is a deficient number, since it is larger than the sum of its proper divisors (38818317).

1201204243 is an frugal number, since it uses more digits than its factorization.

1201204243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5598 (or 5545 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1201204243 is about 34658.3935432674. The cubic root of 1201204243 is about 1063.0139223235.

Adding to 1201204243 its reverse (3424021021), we get a palindrome (4625225264).

The spelling of 1201204243 in words is "one billion, two hundred one million, two hundred four thousand, two hundred forty-three".