1201263403 has 4 divisors (see below), whose sum is σ = 1201382560. Its totient is φ = 1201144248.

The previous prime is 1201263379. The next prime is 1201263431. The reversal of 1201263403 is 3043621021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201263403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201263463) 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 3 ways as a sum of consecutive naturals, for example, 42900 + ... + 65137.

It is an arithmetic number, because the mean of its divisors is an integer number (300345640).

Almost surely, 2^1201263403 is an apocalyptic number.

1201263403 is a deficient number, since it is larger than the sum of its proper divisors (119157).

1201263403 is a wasteful number, since it uses less digits than its factorization.

1201263403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119156.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1201263403 is about 34659.2470056694. The cubic root of 1201263403 is about 1063.0313733861.

Adding to 1201263403 its reverse (3043621021), we get a palindrome (4244884424).

The spelling of 1201263403 in words is "one billion, two hundred one million, two hundred sixty-three thousand, four hundred three".