1012100403 has 8 divisors (see below), whose sum is σ = 1349650368. Its totient is φ = 674642024.

The previous prime is 1012100399. The next prime is 1012100413. The reversal of 1012100403 is 3040012101.

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 1012100403 - 2² = 1012100399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1012100413) 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 7 ways as a sum of consecutive naturals, for example, 9400 + ... + 45962.

It is an arithmetic number, because the mean of its divisors is an integer number (168706296).

Almost surely, 2^1012100403 is an apocalyptic number.

1012100403 is a deficient number, since it is larger than the sum of its proper divisors (337549965).

1012100403 is an equidigital number, since it uses as much as digits as its factorization.

1012100403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45793.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1012100403 is about 31813.5254726665. The cubic root of 1012100403 is about 1004.0173072973.

Adding to 1012100403 its reverse (3040012101), we get a palindrome (4052112504).

The spelling of 1012100403 in words is "one billion, twelve million, one hundred thousand, four hundred three".