1242119903 has 2 divisors, whose sum is σ = 1242119904. Its totient is φ = 1242119902.

The previous prime is 1242119897. The next prime is 1242119911. The reversal of 1242119903 is 3099112421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1242119903 - 2⁶ = 1242119839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1242119903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242119003) 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, 621059951 + 621059952.

It is an arithmetic number, because the mean of its divisors is an integer number (621059952).

Almost surely, 2^1242119903 is an apocalyptic number.

1242119903 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242119903 is an equidigital number, since it uses as much as digits as its factorization.

1242119903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 1242119903 is about 35243.7214692206. The cubic root of 1242119903 is about 1074.9489510282.

The spelling of 1242119903 in words is "one billion, two hundred forty-two million, one hundred nineteen thousand, nine hundred three".