1200404243 has 2 divisors, whose sum is σ = 1200404244. Its totient is φ = 1200404242.

The previous prime is 1200404203. The next prime is 1200404329. The reversal of 1200404243 is 3424040021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200404243 is a prime.

It is a super-2 number, since 2×1200404243² = 2881940693224806098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1200404203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600202121 + 600202122.

It is an arithmetic number, because the mean of its divisors is an integer number (600202122).

Almost surely, 2^1200404243 is an apocalyptic number.

1200404243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200404243 is an equidigital number, since it uses as much as digits as its factorization.

1200404243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1200404243 is about 34646.8504051956. The cubic root of 1200404243 is about 1062.7778814216. Note that the first 3 decimals are identical.

Adding to 1200404243 its reverse (3424040021), we get a palindrome (4624444264).

The spelling of 1200404243 in words is "one billion, two hundred million, four hundred four thousand, two hundred forty-three".