1243201003 has 8 divisors (see below), whose sum is σ = 1363798080. Its totient is φ = 1123867080.

The previous prime is 1243200979. The next prime is 1243201049. The reversal of 1243201003 is 3001023421.

It is a happy number.

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 1243201003 - 2²⁹ = 706330091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243201703) 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, 313725 + ... + 317662.

It is an arithmetic number, because the mean of its divisors is an integer number (170474760).

Almost surely, 2^1243201003 is an apocalyptic number.

1243201003 is a deficient number, since it is larger than the sum of its proper divisors (120597077).

1243201003 is a wasteful number, since it uses less digits than its factorization.

1243201003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631577.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1243201003 is about 35259.0556169617. The cubic root of 1243201003 is about 1075.2607272402.

Adding to 1243201003 its reverse (3001023421), we get a palindrome (4244224424).

The spelling of 1243201003 in words is "one billion, two hundred forty-three million, two hundred one thousand, three".