1242140003 has 8 divisors (see below), whose sum is σ = 1416377088. Its totient is φ = 1079144064.

The previous prime is 1242139993. The next prime is 1242140051. The reversal of 1242140003 is 3000412421.

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 1242140003 - 2⁶ = 1242139939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242140063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2810051 + ... + 2810492.

It is an arithmetic number, because the mean of its divisors is an integer number (177047136).

Almost surely, 2^1242140003 is an apocalyptic number.

1242140003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1242140003 is a deficient number, since it is larger than the sum of its proper divisors (174237085).

1242140003 is a wasteful number, since it uses less digits than its factorization.

1242140003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5620573.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1242140003 is about 35244.0066252406. The cubic root of 1242140003 is about 1074.9547492761.

Adding to 1242140003 its reverse (3000412421), we get a palindrome (4242552424).

The spelling of 1242140003 in words is "one billion, two hundred forty-two million, one hundred forty thousand, three".