1421213335442 has 4 divisors (see below), whose sum is σ = 2131820003166. Its totient is φ = 710606667720.

The previous prime is 1421213335441. The next prime is 1421213335481. The reversal of 1421213335442 is 2445333121241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1022482970041 + 398730365401 = 1011179^2 + 631451^2 .

It is not an unprimeable number, because it can be changed into a prime (1421213335441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355303333859 + ... + 355303333862.

Almost surely, 2^{1421213335442} is an apocalyptic number.

1421213335442 is a deficient number, since it is larger than the sum of its proper divisors (710606667724).

1421213335442 is an equidigital number, since it uses as much as digits as its factorization.

1421213335442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710606667723.

The product of its digits is 69120, while the sum is 35.

Adding to 1421213335442 its reverse (2445333121241), we get a palindrome (3866546456683).

The spelling of 1421213335442 in words is "one trillion, four hundred twenty-one billion, two hundred thirteen million, three hundred thirty-five thousand, four hundred forty-two".