1421121143042 has 4 divisors (see below), whose sum is σ = 2131681714566. Its totient is φ = 710560571520.

The previous prime is 1421121143033. The next prime is 1421121143083. The reversal of 1421121143042 is 2403411211241.

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., 1034225946961 + 386895196081 = 1016969^2 + 622009^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355280285759 + ... + 355280285762.

Almost surely, 2^{1421121143042} is an apocalyptic number.

1421121143042 is a deficient number, since it is larger than the sum of its proper divisors (710560571524).

1421121143042 is an equidigital number, since it uses as much as digits as its factorization.

1421121143042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710560571523.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 1421121143042 its reverse (2403411211241), we get a palindrome (3824532354283).

The spelling of 1421121143042 in words is "one trillion, four hundred twenty-one billion, one hundred twenty-one million, one hundred forty-three thousand, forty-two".