1242103421412 has 144 divisors (see below), whose sum is σ = 3646005242880. Its totient is φ = 349191539136.

The previous prime is 1242103421411. The next prime is 1242103421413. The reversal of 1242103421412 is 2141243012421.

1242103421412 is a `hidden beast` number, since 1 + 2 + 4 + 210 + 34 + 2 + 1 + 412 = 666.

It is an interprime number because it is at equal distance from previous prime (1242103421411) and next prime (1242103421413).

It is not an unprimeable number, because it can be changed into a prime (1242103421411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14934639 + ... + 15017577.

Almost surely, 2^{1242103421412} is an apocalyptic number.

1242103421412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242103421412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1823002621440).

1242103421412 is an abundant number, since it is smaller than the sum of its proper divisors (2403901821468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242103421412 is a wasteful number, since it uses less digits than its factorization.

1242103421412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83910 (or 83905 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 1242103421412 its reverse (2141243012421), we get a palindrome (3383346433833).

The spelling of 1242103421412 in words is "one trillion, two hundred forty-two billion, one hundred three million, four hundred twenty-one thousand, four hundred twelve".