1242321340425 has 48 divisors (see below), whose sum is σ = 2240865414720. Its totient is φ = 602292064000.

The previous prime is 1242321340387. The next prime is 1242321340427. The reversal of 1242321340425 is 5240431232421.

It is a happy number.

It is not a de Polignac number, because 1242321340425 - 2¹⁶ = 1242321274889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1242321340427) 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 47 ways as a sum of consecutive naturals, for example, 12547615 + ... + 12646235.

It is an arithmetic number, because the mean of its divisors is an integer number (46684696140).

Almost surely, 2^{1242321340425} is an apocalyptic number.

1242321340425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1242321340425 is a deficient number, since it is larger than the sum of its proper divisors (998544074295).

1242321340425 is a wasteful number, since it uses less digits than its factorization.

1242321340425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113914 (or 113909 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 1242321340425 its reverse (5240431232421), we get a palindrome (6482752572846).

The spelling of 1242321340425 in words is "one trillion, two hundred forty-two billion, three hundred twenty-one million, three hundred forty thousand, four hundred twenty-five".