1420243903 has 8 divisors (see below), whose sum is σ = 1619463888. Its totient is φ = 1233876864.

The previous prime is 1420243879. The next prime is 1420243919. The reversal of 1420243903 is 3093420241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1420243903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420243943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3213001 + ... + 3213442.

It is an arithmetic number, because the mean of its divisors is an integer number (202432986).

Almost surely, 2^1420243903 is an apocalyptic number.

1420243903 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1420243903 is a deficient number, since it is larger than the sum of its proper divisors (199219985).

1420243903 is a wasteful number, since it uses less digits than its factorization.

1420243903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6426473.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 1420243903 is about 37686.1234806659. The cubic root of 1420243903 is about 1124.0552141563.

The spelling of 1420243903 in words is "one billion, four hundred twenty million, two hundred forty-three thousand, nine hundred three".