1243200133 has 8 divisors (see below), whose sum is σ = 1453842368. Its totient is φ = 1040818464.

The previous prime is 1243200107. The next prime is 1243200173. The reversal of 1243200133 is 3310023421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1243200133 - 2¹³ = 1243191941 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 1243200133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243200173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2064816 + ... + 2065417.

It is an arithmetic number, because the mean of its divisors is an integer number (181730296).

Almost surely, 2^1243200133 is an apocalyptic number.

It is an amenable number.

1243200133 is a deficient number, since it is larger than the sum of its proper divisors (210642235).

1243200133 is an equidigital number, since it uses as much as digits as its factorization.

1243200133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130283.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1243200133 is about 35259.0432797034. The cubic root of 1243200133 is about 1075.2604764154.

Adding to 1243200133 its reverse (3310023421), we get a palindrome (4553223554).

The spelling of 1243200133 in words is "one billion, two hundred forty-three million, two hundred thousand, one hundred thirty-three".