1404121903 has 2 divisors, whose sum is σ = 1404121904. Its totient is φ = 1404121902.

The previous prime is 1404121891. The next prime is 1404121937. The reversal of 1404121903 is 3091214041.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1404121903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1404121703) 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 as a sum of consecutive naturals, namely, 702060951 + 702060952.

It is an arithmetic number, because the mean of its divisors is an integer number (702060952).

Almost surely, 2^1404121903 is an apocalyptic number.

1404121903 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404121903 is an equidigital number, since it uses as much as digits as its factorization.

1404121903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1404121903 is about 37471.6146302771. The cubic root of 1404121903 is about 1119.7857538215.

Adding to 1404121903 its reverse (3091214041), we get a palindrome (4495335944).

The spelling of 1404121903 in words is "one billion, four hundred four million, one hundred twenty-one thousand, nine hundred three".