1012200403 has 4 divisors (see below), whose sum is σ = 1012654720. Its totient is φ = 1011746088.

The previous prime is 1012200391. The next prime is 1012200439. The reversal of 1012200403 is 3040022101.

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-1012200403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012200493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223800 + ... + 228277.

It is an arithmetic number, because the mean of its divisors is an integer number (253163680).

Almost surely, 2^1012200403 is an apocalyptic number.

1012200403 is a deficient number, since it is larger than the sum of its proper divisors (454317).

1012200403 is an equidigital number, since it uses as much as digits as its factorization.

1012200403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454316.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1012200403 is about 31815.0970924182. The cubic root of 1012200403 is about 1004.0503733264.

Adding to 1012200403 its reverse (3040022101), we get a palindrome (4052222504).

The spelling of 1012200403 in words is "one billion, twelve million, two hundred thousand, four hundred three".