1242040040103 has 8 divisors (see below), whose sum is σ = 1656058584448. Its totient is φ = 828024094584.

The previous prime is 1242040040063. The next prime is 1242040040107. The reversal of 1242040040103 is 3010400402421.

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

It is not a de Polignac number, because 1242040040103 - 2¹⁷ = 1242039909031 is a prime.

It is a super-2 number, since 2×1242040040103² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242040040103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242040040107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1309200 + ... + 2048922.

It is an arithmetic number, because the mean of its divisors is an integer number (207007323056).

Almost surely, 2^{1242040040103} is an apocalyptic number.

1242040040103 is a deficient number, since it is larger than the sum of its proper divisors (414018544345).

1242040040103 is an equidigital number, since it uses as much as digits as its factorization.

1242040040103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299413.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 1242040040103 its reverse (3010400402421), we get a palindrome (4252440442524).

The spelling of 1242040040103 in words is "one trillion, two hundred forty-two billion, forty million, forty thousand, one hundred three".